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Warlords of Atlantis (1978) Plot Summary & Timeline

Warlords of Atlantis (1978) movie poster

Warlords of Atlantis is a 1978 sci-fi and adventure film directed by Kevin Connor, running 1 hour 36 minutes. This page retells the whole story in 571 words (about 2 minutes to read) and covers 14 key events in order, 13 characters, where and when it is set and 4 themes. Looking for the cast, ratings and where to stream it? See the movie page for Warlords of Atlantis.

to read the plot summary
2 min
key events in the timeline
14
characters profiled
13
themes explained
4
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Warlords of Atlantis (1978) movie poster
Released
Runtime
1h 36m
Director
Kevin Connor
Original language
English
No spoilers

What Is Warlords of Atlantis About?

The premise of Warlords of Atlantis in 312 words, with nothing given away. The full story follows below.

In the early 1900s a daring British expedition sets out to prove that the legendary city of Atlantis is more than myth. Led by the scholarly Professor Aitken, the venture is a blend of academic obsession and adventurous spirit, with his son Charles eager to follow his father’s footsteps and the inventive engineer Greg Collinson bringing a specially designed diving bell to the fore. Their vessel, the Texas Rose, carries a disparate crew drawn by the promise of untold riches, each person bringing a mix of curiosity and self‑interest to the high‑stakes voyage.

The world beneath the waves is rendered with a palpable sense of foreboding. The sea, vast and indifferent, becomes a stage for both wonder and dread, as the team descends into darkness armed with cutting‑edge technology that feels both miraculous and fragile. The atmosphere is thick with the tension of unknown depths, where the line between discovery and danger blurs, and every bubbling echo hints at secrets lurking far below the surface.

As the bell breaches the ocean floor, the expedition encounters an environment that defies ordinary comprehension. Strange, otherworldly forces stir the deep, suggesting that the waters guard more than sunken treasure. The narrative hints at encounters with an advanced, alien-like civilization that once thrived beneath the sea—a society whose very existence reshapes the explorers’ understanding of humanity’s place in the cosmos.

The core of the story rests on the dynamics between its central figures. Professor Aitken balances scholarly rigor with a yearning for legacy, while Charles wrestles with youthful ambition and the weight of paternal expectation. Greg Collinson supplies the technical daring that makes the descent possible, and Captain Daniels must steer both ship and crew through mounting uncertainty. Their intertwined motivations set the stage for a suspense‑laden journey that hovers between the thrill of discovery and the terror of what may lie hidden in the abyss.

Full plot

What Happens in Warlords of Atlantis?

The complete story of Warlords of Atlantis, from the first scene to the last, in 571 words (about 2 minutes). Spoilers throughout. Names in the text link to 12 cast member pages.

Spoilers ahead

At the dawn of the 20th century, British archaeologist Professor Aitken, Donald Bisset and his son Charles, Peter Gilmore, hire Captain Daniels, Shane Rimmer, and his ship the Texas Rose to voyage at sea with a bold goal: to test a diving bell engineered by Greg Collinson, Doug McClure, in the quest for proof of the fabled city of Atlantis.

On their first descent, Charles and Greg are assaulted by a reptilian sea monster that bursts through the bell’s hull. Greg uses a live wire to electrocute the creature, and the crew unearth a solid gold statue that seems to confirm Atlantis exists. Back on deck, the discovery triggers a mutiny as Grogan, Hal Galili and Fenn, John Ratzenberger, along with Jacko, Derry Power, plot to seize the treasure. The line to the diving bell is cut, trapping Greg and Charles at the seabed, while a shot from the mutineers fatally wounds the Professor.

A colossal octopus—the Sentinel—attacks, a creature sent by Atlantis’s inhabitants. The mutiny’s chaos leaves Greg, Charles, and the four crewmen captured; only Sandy, the ship’s cabin boy, and the professor remain free aboard the Texas Rose. They are hauled to a cavern beneath the ocean floor, where they meet Atmir, Michael Gothard, a member of Atlantis’s ruling class, and the spearl-wielding Guardians. Atmir promises safety and explains that Atlantis comprises seven cities; two have already sunk beneath the waves, and a third lies abandoned.

Their journey through a prehistoric swamp inhabited by the Mogdaan brings the group to the city of Vaar. Five of the surface-dwellers are imprisoned while Charles is taken to Chinqua, the royal city. Charles, a scientist by training, is granted an audience with King Atraxon, Daniel Massey, and Queen Atsil, Cyd Charisse, who reveal their plan to shape human history using mind powers and claim they originally came from Mars.

Meanwhile, Greg and the Texas Rose crew befriend Briggs, Robert Brown, the captain of the long-missing Mary Celeste, who has become the unofficial leader of the human slaves—among them his daughter Delphine, Lea Brodie. Briggs warns that the Atlanteans will grant them gills so they can never return to the surface, while they stand guard against the marauding Zaargs. A sudden Zaarg attack kills Briggs, and Delphine helps Greg and the others plan a rescue of Charles.

Charles grows fascinated by the Atlanteans’ utopia, but Greg arrives in time to snap him back to reality, and together they rescue the others from Atlantean influence. The escape route leads through the swamp where the Mogdaan claims Jacko’s life, and the party presses on toward the diving bell. Atmir and the Guardians confront them with telekinetic force, conjuring violent water eruptions to deter their flight, yet Delphine, whose gills keep her bound to Atlantis, bravely covers their retreat.

They reach the diving bell and bubble to the surface, reuniting with Sandy. Back aboard the Texas Rose, Fenn and Grogan are pinned down by the cabin boy’s revolver, and Sandy reveals Daniels’s betrayal: it was he who shot the Professor to keep a profit-driven plan alive. Daniels tries to seize control, but the mutineers lock him and his captive allies away with the Professor. Just as the truth comes to light, the Sentinel swallows the ship in a final, devastating assault, crushing Daniels beneath a statue while the rest launch into the lifeboat, leaving Atlantis’s island world behind and the mystery of their uncharted voyage unresolved.

Timeline

Warlords of Atlantis Timeline: Every Key Event in Order

14 key events in the order they happen, from “Expedition sets sail to seek Atlantis” to “Sentinel destroys the ship; survivors escape”. 14 events name a place, across 12 locations.

  1. 1

    Expedition sets sail to seek Atlantis

    Professor Aitken, his son Charles, and Captain Daniels hire the Texas Rose to take them to sea in the early 20th century. They intend to use a diving bell designed by engineer Greg Collinson to search for proof of Atlantis. The voyage begins as they depart for the unknown waters.

    When:Early 1900s Where:Offshore departure point / aboard Texas Rose

  2. 2

    First dive reveals danger and treasure

    Charles and Greg dive in the bell and are attacked by a reptilian sea monster that breaches the bell’s bottom. Greg impales the creature by thrusting a live wire into its mouth, electrocuting it. After the danger subsides, they discover a solid gold statue, a sign that Atlantis may lie beneath.

    When:During initial dive Where:Underwater near diving bell

  3. 3

    Mutiny and murder aboard the Texas Rose

    When the statue is hoisted aboard, mutineers Grogan, Fenn, and Jacko cut the diving bell line, trapping Greg and Charles at the sea floor. A shot strikes Professor Aitken in the back, shattering the group's resolve and triggering a mutiny for profit. The discovery turns from science into a life-or-death fight for survival.

    When:After hoisting the statue Where:Texas Rose

  4. 4

    The Sentinel attacks and captures the castaways

    An enormous octopus known as the Sentinel emerges from Atlantis and attacks the Texas Rose from the depths. The four crewmen, along with Greg and Charles in the bell, are captured and taken to a cavern beneath the ocean floor. Sandy, the ship's cabin boy, and Professor Aitken are left aboard, overwhelmed but alive.

    When:During the Sentinel assault Where:On/near the Texas Rose and diving bell

  5. 5

    Atlantean rulers reveal Atlantis' seven cities

    In the cavern, Atmir greets the surface-dwellers and explains that Atlantis consists of seven cities. He describes two cities already sent down to the ocean and a third now deserted. The visitors begin to grasp the grand Atlantean plan for shaping Earth’s future.

    When:Shortly after capture Where:Undersea cavern / Atlantean city

  6. 6

    Journey through Mogdaan swamp to Vaar

    Atmir escorts the humans through a prehistoric swamp inhabited by a millipede-like monster called Mogdaan, then they reach the Atlantean city of Vaar. Five of the men are thrown into a dungeon, while Charles is taken to Chinqua, the royal city. The stage is set for political intrigue as the Atlanteans reveal their power.

    When:Following the cavern visit Where:Mogdaan swamp to Vaar

  7. 7

    Charles meets the Atlantean rulers

    Charles is granted an audience with King Atraxon and Queen Atsil in Chinqua. They claim to be from Mars and reveal how their mind powers shape human history. They try to recruit Charles as part of their utopian project, testing his loyalties.

    When:During audience with Atlantean rulers Where:Chinqua, Atlantean royal city

  8. 8

    Greg's group learns of gills and Zaarg threat

    Greg and the surviving crew befriend Briggs, captain of the long-missing Mary Celeste, who becomes the unofficial leader of the human slaves. Briggs explains that Atlantis will grant them gills so they can never return to the surface, ensuring their loyalty. Delphine, Briggs’s daughter, joins Greg in planning an escape and resisting the Atlanteans' rule, including constant Zaarg attacks.

    When:After joining Cavern group Where:Atlantis / Atlantean under-city

  9. 9

    Escape plan toward Atraxon’s palace

    Briggs reveals a tunnel that leads toward Atraxon’s palace, offering a potential route to Charles’s rescue. The group steels themselves for a dangerous move while Zaarg attacks threaten Atlantis. The plan centers on slipping through Atlantean defenses to free Charles and escape to the surface.

    When:During escape attempt Where:Atraxon's palace vicinity

  10. 10

    Charles escapes mind-control and returns to the group

    Charles, seduced by the Atlanteans' utopian vision, initially resists leaving, but Greg knocks him out of the influence. Restored to reason, Charles decides to escape with Greg and the others. They break away from Chinqua and begin the journey back toward the ocean surface.

    When:After the escape attempt Where:Atraxon's palace / Chinqua

Show the other 4 events of Warlords of Atlantis
  1. 11

    Retreat through the swamp and Mogdaan's attack

    The group retraces their path through the swamp, and the Mogdaan monster returns, killing Jacko as they push on. They manage to reach the diving bell, though the journey is frantic and perilous. Delphine’s presence helps as she sacrifices safety to ensure the others’ escape.

    When:On the return journey Where:Mogdaan swamp

  2. 12

    Final ascent to the surface and trap at the bell

    Admir and the Guardians arrive at the diving bell and use telekinesis to unleash a violent surge of seawater to deter the escapees. The group presses on, while Delphine covers their retreat, knowing she can never return to surface life. They finally breach the water and make it back to the Texas Rose.

    When:Approach to surface Where:Diving bell area / surface

  3. 13

    Truth comes out: mutiny revealed

    Back on Texas Rose, Sandy confronts the mutineers Fenn and Grogan and takes control of the situation with a pistol point. Daniels reveals that he shot the Professor, planning to profit from the discovery, throwing their dealings into chaos. Fenn and Grogan are restrained as they face the consequences of the mutiny.

    When:On surface after return from Atlantis Where:Texas Rose

  4. 14

    Sentinel destroys the ship; survivors escape

    The Sentinel attacks the Texas Rose and destroys the ship, ending the mutiny and altering the group’s fate. Daniels is crushed by a statue that appears in the chaos, while the remaining survivors escape in a lifeboat. The ending leaves a grim sense of uncertainty as the sea swallows the last evidence of Atlantis.

    When:Final moments at sea Where:Texas Rose

Characters

Who Are the Main Characters in Warlords of Atlantis?

13 characters, among them Fenn (John Ratzenberger), Briggs (Robert Brown) and Captain Daniels (Shane Rimmer): who each one is and the part they play in the story. Every profile links to the actor’s page.

  • John Ratzenberger as Fenn (John Ratzenberger) in Warlords of Atlantis

    Fenn (John Ratzenberger)

    Played by John Ratzenberger

    A scheming deckhand who collaborates with mutineers to seize the Atlantis gold. He embodies a ruthless pragmatism that prioritizes profit over people, contributing to the crew’s peril and the unraveling of plans.

    • ⚔️ Mutinous
    • 💰 Greed
    • 🧭 Opportunistic
  • B(

    Briggs (Robert Brown)

    Played by Robert Brown

    Captain of the Mary Celeste and de facto leader among the surface captives. He navigates danger with experience and stubborn resolve, dying during the Zaarg attacks and symbolizing the high price of leadership under pressure.

    • ⚓ Leader
    • 🗺️ Guide
    • 🐉 Struggle
  • CD

    Captain Daniels (Shane Rimmer)

    Played by Shane Rimmer

    Captain of the Texas Rose and the covert mastermind behind the mutiny. He manipulates others for personal gain and reveals a dangerous willingness to profit from the expedition, meeting a violent end when the Sentinel destroys the ship.

    • 🧭 Manipulative
    • 💣 Ambition
    • 🗡️ Deceit
  • A(

    Atsil (Cyd Charisse)

    Played by Cyd Charisse

    Atlantean Queen who represents the ruling class’s power and the seductive allure of Atlantean civilization. She embodies the mystique of a society that uses mind power to influence the surface world.

    • 👑 Ruler
    • 🧠 Mind Power
    • 🪄 Authority
  • A(

    Atmir (Michael Gothard)

    Played by Michael Gothard

    Atlantean noble who guides the group through the underwater world. He wields telekinetic abilities and embodies the complex mix of loyalty to his people and peril for outsiders.

    • 🏛️ Elite
    • 🧠 Telekinesis
    • 🗺️ Guide
  • Doug McClure as Greg Collinson (Doug McClure) in Warlords of Atlantis

    Greg Collinson (Doug McClure)

    Played by Doug McClure

    Engineer who designed the diving bell and becomes a crucial ally to Briggs and the surface crew. His practical problem-solving salvages hope amid hostile forces beneath the sea.

    • 🛠️ Engineer
    • 🧭 Problem-solver
    • 🦈 Survivor
  • A(

    Atraxon (Daniel Massey)

    Played by Daniel Massey

    King of Atlantean society who contends with Charles’s scientific perspective and the humans’ presence. He embodies refined menace, using mind power and diplomacy to shape outcomes.

    • 👑 King
    • 🧠 Mind Power
    • 🗡️ Strategist
  • CA

    Charles Aitken (Peter Gilmore)

    Played by Peter Gilmore

    Young scientist and son of Professor Aitken. Initially drawn to Atlantean promises, he ultimately resists their influence and chooses escape and truth over manipulation.

    • 🧬 Scientist
    • 🧭 Skeptic
    • 🕊️ Freedom-seeker
  • D(

    Delphine (Lea Brodie)

    Played by Lea Brodie

    Briggs’s daughter who forms a bond with the surface crew. Her gills tether her to Atlantis, yet she aids in the escape and becomes a pivotal ally in the plan to flee.

    • 👧 Daughter
    • 🐟 Gills
    • 🗝️ Ally
  • G(

    Grogan (Hal Galili)

    Played by Hal Galili

    Mutineer working with Fenn who drives the coup and fights alongside the captors. His actions heighten peril and push the narrative toward violent confrontations.

    • 🗡️ Mutinous
    • 🧭 Opportunist
    • ⚔️ Fighter
  • J(

    Jacko (Derry Power)

    Played by Derry Power

    Deckhand whose fate underscores the dangers of the undersea world. His death in the Mogdaan swamp marks the high stakes of Atlantean exploration.

    • 🪸 Survivor
    • 💀 Casualty
    • 🐍 Danger
  • PA

    Professor Aitken (Donald Bisset)

    Played by Donald Bisset

    British archaeologist and father of Charles. He embodies scientific curiosity and becomes a target amid the power struggles aboard the ship.

    • 📚 Scholar
    • 🧭 Explorer
    • 🕊️ Mortality
  • S(

    Sandy (Ashley Knight)

    Played by Ashley Knight

    Ship’s cabin boy who bears witness to the mutiny and assists in the escape. He provides crucial information and remains a figure of loyalty through the crisis.

    • 🧭 Witness
    • 🕊️ Helper
    • ⚓ Loyal
Setting

Where and When Is Warlords of Atlantis Set?

Warlords of Atlantis is set in Texas Rose, Atlantis seabed cavern, City of Vaar, Chinqua, Mogdaan swamp… (Early 20th century). Here is why the time and place matter to the story.

When

Early 20th century

The story is set at the dawn of the 20th century, a period of maritime exploration and scientific curiosity. Adventurous expeditions and technological innovations, such as the diving bell, reflect the era's blend of progress and wonder. Beneath the surface, Atlantis represents a mythic civilization that challenges the explorers’ assumptions about civilization and power.

Where

Texas Rose, Atlantis seabed cavern, City of Vaar, Chinqua, Mogdaan swamp, Atraxon's palace, open Atlantic Ocean

The action unfolds primarily on the sea aboard the Texas Rose as it sails toward the fabled Atlantis. After a mutiny, the crew and scientists are dragged into a submerged world beneath the ocean, a network of caverns and the city of Vaar and Chinqua. They encounter the Mogdaan swamp and the Atlantean palace, entering a landscape that blends ancient ruins with alien civilization.

  • 🚢 Ocean voyage
  • 🗺️ Shipboard adventure
  • 🏛️ Atlantis undersea city
  • 🐙 Deep-sea dangers
  • 🧭 Exploration
Themes

What Are the Themes of Warlords of Atlantis?

4 ideas the story keeps returning to, among them Exploration, Mind Power and Mutiny and Leadership.

  1. 01

    Exploration

    The plot centers on the drive to uncover Atlantis, fueled by curiosity and scientific ambition. The diving expedition reveals both marvel and danger as ancient ruins and unknown lifeforms test human limits. The narrative juxtaposes the lure of discovery with the potential for exploitation and peril.

  2. 02

    Mind Power

    Atlantean rulers wield extraordinary mental abilities to shape human history and lure surface dwellers into a constructed utopia. Charles Aitken’s scientific skepticism clashes with Atlantean mind control, highlighting themes of influence, autonomy, and illusion. The tension raises questions about free will in the face of overpowering persuasion.

  3. 03

    Mutiny and Leadership

    Mutiny fissures the voyage, pitting sailors against captains and captors. Betrayals and shifting loyalties drive the action and moral ambiguity grows as survival overrides ethics. Leadership is tested as profit, fame, and safety collide under extreme pressure.

  4. 04

    Freedom and Escape

    Captives and survivors seek a return to the surface world, forming fragile alliances under the watch of Atlantean rulers and monstrous guardians. The escape sequence pits ingenuity against overwhelming odds, emphasizing resilience and the high cost of discovery. The finale underscores the fragility of freedom when confronted with powerful, otherworldly forces.

Tone & mood

What Kind of Film Is Warlords of Atlantis?

Tense in tone, with fast pacing and a moderate story, going by the plot summary.

Tone
Tense
Pacing
Fast
Story
Moderate
Intensity
High
Ending
Bittersweet

A fast-paced, tense adventure filled with constant peril from mutiny, sea monsters, and an advanced alien race, leading to a bittersweet escape with significant losses.

  • tense
  • adventurous
  • claustrophobic
  • treacherous
  • perilous
  • fantastical
  • treasure hunt
  • betrayal
  • survival
  • alien civilization

Content notes: character death, slavery, eaten alive, betrayal.

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FAQ

Warlords of Atlantis Plot Questions

5 quick answers about Warlords of Atlantis, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is Warlords of Atlantis about?

In the early 1900s a daring British expedition sets out to prove that the legendary city of Atlantis is more than myth. Led by the scholarly Professor Aitken, the venture is a blend of academic obsession and adventurous spirit, with his son Charles eager to follow his father’s footsteps and the…

Read the full plot summary

When and where does Warlords of Atlantis take place?

Warlords of Atlantis is set in Texas Rose, Atlantis seabed cavern, City of Vaar, Chinqua, Mogdaan swamp, Atraxon's… (Early 20th century). The story is set at the dawn of the 20th century, a period of maritime exploration and scientific curiosity. Adventurous expeditions and technological innovations, such as the diving bell, reflect the era's blend of…

The setting explained

Who are the main characters in Warlords of Atlantis?

The story follows Fenn (John Ratzenberger) (played by John Ratzenberger), Briggs (Robert Brown) (played by Robert Brown), Captain Daniels (Shane Rimmer) (played by Shane Rimmer) and Atsil (Cyd Charisse) (played by Cyd Charisse); the character guide covers 13 characters in all.

All the characters

What are the main themes of Warlords of Atlantis?

The summary picks out 4 themes: Exploration, Mind Power, Mutiny and Leadership and Freedom and Escape.

The themes explained

Who directed Warlords of Atlantis?

Warlords of Atlantis (1978) was directed by Kevin Connor and runs 1 hour 36 minutes.

Kevin Connor’s films

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