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Tremors: A Cold Day in Hell (2018) Plot Summary & Timeline

Tremors: A Cold Day in Hell (2018) movie poster

Tremors: A Cold Day in Hell is a 2018 adventure and sci-fi film directed by Don Michael Paul, running 1 hour 38 minutes. This page retells the whole story in 597 words (about 3 minutes to read) and covers 9 key events in order, 4 characters, where and when it is set and 2 themes. Looking for the cast, ratings and where to stream it? See the movie page for Tremors: A Cold Day in Hell.

to read the plot summary
3 min
key events in the timeline
9
characters profiled
4
themes explained
2
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Tremors: A Cold Day in Hell (2018) movie poster
Released
Runtime
1h 38m
Director
Don Michael Paul
Original language
English
No spoilers

What Is Tremors: A Cold Day in Hell About?

The premise of Tremors: A Cold Day in Hell in 256 words, with nothing given away. The full story follows below.

In the frozen reaches of Canada’s Nunavut Territory, a remote research outpost sits amid endless white, its purpose cloaked in secrecy. Beneath the ice‑capped landscape, something far larger than the terrain itself stirs: enormous subterranean worms that have become the unlikely focus of a covert operation. The stark, wind‑howled environment adds a relentless pressure, turning every breath into a reminder that nature here is as unforgiving as it is mysterious.

Burt Gummer arrives with his son Travis Welker, both seasoned by countless brushes with the series’ iconic monsters. Burt brings his trademark blend of lethal ingenuity and off‑beat humor, while Travis balances his father’s swagger with a pragmatic curiosity that keeps the pair grounded. They are soon joined by Dr. Rita Sims, a pragmatic scientist whose knowledge of the creatures borders on obsession, and Valerie McKee, an eager enthusiast whose fascination hints at deeper layers of intrigue. Together they form an uneasy alliance, each driven by personal stakes and a shared instinct to survive the unseen threat lurking beneath the snow.

The film’s tone walks a tightrope between gritty survival thriller and the franchise’s signature tongue‑in‑cheek excitement. As the team uncovers the unsettling possibility that the worms are being weaponized, a race against time begins: they must find a way to neutralize the danger without falling prey to it. The tension is palpable, the Arctic’s icy silence broken only by the rumble of something massive below, promising a showdown where ingenuity, family bonds, and a dash of dark humor may prove just as vital as firepower.

Full plot

What Happens in Tremors: A Cold Day in Hell?

The complete story of Tremors: A Cold Day in Hell, from the first scene to the last, in 597 words (about 3 minutes). Spoilers throughout.

Spoilers ahead

In the remote plains of Nunavut Territory in Canada, a team of young researchers dedicated to collecting ice core samples from glaciers meet a sudden and tragic end when they are attacked and killed by a creature known as a Graboid. This mysterious and dangerous creature poses a serious threat to anyone venturing into the icy wilderness. Burt Gummer, played by Michael Gross](/actor/michael-gross), along with his son Travis Welker, is drawn into the situation after a seemingly routine encounter with a tax agent is brushed aside. They are approached by the knowledgeable Dr. Rita Sims and a young Graboid enthusiast, Valerie McKee, who request their assistance in investigating the unfolding chaos.

Their pursuit of the truth takes a perilous turn when their plane is suddenly attacked by an additional threat—the ferocious Ass-Blaster. Despite the chaos, Burt and Travis manage to reach a secured facility. Once inside, they uncover a troubling reality: the region’s unnaturally warm Arctic temperatures have created ideal conditions for Graboids to thrive and proliferate. This alarming development hints at an even darker secret, as Burt begins to suspect that the neighboring research groups, particularly those associated with DARPA, might be developing biological weapons using the Graboids’ unique biological properties.

As tensions rise, an Ass-Blaster makes a deadly attack on the facility, resulting in Burt heroically rescuing a researcher while suffering from a mysterious episode that causes him to collapse. It is revealed that Burt has been infected by a parasite injected by a Graboid years earlier, which is now threatening his life. The only hope for his recovery lies in extracting antibodies from a live Graboid, a task that becomes crucial as the creature continues to kill off the remaining researchers and staff.

The team faces life-threatening situations as they struggle to escape. Multiple members attempt to reach the generator area where the plane’s pilot, Mac, is working to repair their aircraft, while others aim to disable an automatic drill that has been activated and is causing further chaos. Meanwhile, Swackhammer, the facilities manager, devises a desperate plan to contain a Graboid using a makeshift underground electric fence, highlighting the group’s ingenuity under pressure.

Adding to the complexity, Agent Dalkwed from DARPA joins Burt’s team, revealing that his agency’s true interest was not only about studying the creatures but also about harvesting resources such as melted water, rather than developing bio-weapons. In exchange for their cooperation, the government agrees to clear Burt and Travis of tax liens, removing their financial burdens and granting them exemption from future property taxes. This agreement underscores Burt’s desire for independence and self-reliance, free from corporate and governmental interference.

The climax unfolds as the team engineers a daring trap, using a storage container to spear a Graboid and cut off its front tentacles. With a syringe, Travis carefully extracts venom from the creature’s internal gland, an act vital for saving Burt, who has been gravely affected by the Graboid parasite. Their efforts succeed, and with the threat neutralized, the team detonates the last remaining Graboid—their victory secured. Agent Cutts finalizes the paperwork, ensuring Burt and Travis are free from tax liabilities, before the team blows up the creature to prevent it from being exploited as a biological weapon.

Throughout this intense saga, themes of survival, scientific discovery, and corporate conspiracy intertwine, culminating in a gripping story of resilience against nature’s most formidable monsters. The film vividly captures the tension and danger of facing creatures born from nature and perhaps nurtured by human greed, leaving viewers on the edge of their seats with a blend of action, science, and suspense.

Timeline

Tremors: A Cold Day in Hell Timeline: Every Key Event in Order

9 key events in the order they happen, from “Research team killed by a Graboid” to “Government grants property relief and they destroy the last Graboid”.

  1. 1

    Research team killed by a Graboid

    In Canada's Nunavut Territory, a team of young researchers collecting ice core samples of glaciers is ambushed and killed by a Graboid, marking the beginning of the disaster. The attack highlights the dangerous presence of Graboids in the area caused by Arctic heat conditions. This event sets the stage for the subsequent hunt and emergency investigations.

    Where:Nunavut Territory, Canada

  2. 2

    Burt Gummer and Travis Welker are approached for help

    After a run-in with a tax agent, Burt Gummer and his son Travis Welker are contacted by Dr. Rita Sims and young Graboid hunter Valerie McKee. They seek assistance in investigating the increasing threat of Graboids and related creatures in the Arctic. The duo discusses plans to explore the phenomena and help contain the outbreak.

  3. 3

    Attack by an Ass-Blaster

    Their plane is attacked by an Ass-Blaster, a flying variant of the Graboid, forcing Burt and Travis to make a desperate run to the research facility. Despite the attack, they manage to reach the site, where they begin their investigation into the creature threats. The attack underscores the escalating danger posed by the monsters.

  4. 4

    Learn about Arctic heat and bio-engineering

    At the facility, Burt learns that the Arctic's abnormal heat has made the region ideal for Graboids to thrive and spread. He suspects that nearby research at DARPA is developing bio-weapons using the creatures. The connection between the heat and the creatures' proliferation becomes a core concern for the team.

  5. 5

    An Ass-Blaster attack injures Burt and reveals his infection

    During an Ass-Blaster attack, Burt rescues a researcher but experiences an episode and collapses. It is revealed that he has been infected with a parasite derived from Graboid venom, which he contracted while inside a Graboid months earlier. This discovery prompts urgent efforts to find a cure.

  6. 6

    Researchers attempt to escape and operate defenses

    The team tries to escape the facility while others work to activate defenses. Some members head toward the generator to repair the plane, while Swackhamer creates an underground electric fence. Concurrently, others attempt to turn off an active automated drill, trying to halt the environmental disturbances facilitating the creatures.

  7. 7

    DARPA agent joins the group and reveals intentions

    Agent Cutts from DARPA joins Burt and his group, revealing that their original mission was to extract water rather than develop bio-weapons. He agrees to Burt's demand that the government remove tax liens from their property and grants them tax exemption. The group continues their fight for survival amidst internal and external pressures.

  8. 8

    Trapping and extracting venom from a Graboid

    The team uses a storage container to trap a Graboid, spearing it from the side to immobilize it, and cuts off its tentacles. Travis then inserts a syringe into the creature's mouth to draw venom from its internal gland sac. This venom becomes crucial for developing an antidote to Burt's infection.

  9. 9

    Government grants property relief and they destroy the last Graboid

    After securing the venom, Agent Cutts provides the paperwork removing the tax liens, effectively freeing Burt and Travis from financial burdens as they prepare to leave. The team then evacuates and blows up the remaining Graboid to prevent further threat, concluding their battle with the creatures.

Characters

Who Are the Main Characters in Tremors: A Cold Day in Hell?

4 characters, among them Hart Hansen (Kiroshan Naidoo), Aklark (Keeno Lee Hector) and Valerie McKee (Jamie-Lee Money): who each one is and the part they play in the story. Every profile links to the actor’s page.

  • Kiroshan Naidoo as Hart Hansen (Kiroshan Naidoo) in Tremors: A Cold Day in Hell

    Hart Hansen (Kiroshan Naidoo)

    Played by Kiroshan Naidoo

    Hart Hansen is a resourceful researcher who likely supplies critical information about the ice core samples and the environment. He is probably cautious and perceptive, dealing with the harsh Arctic environment while trying to survive the Graboids' attacks.

    • 🤝 researcher
    • 🧊 scientist
    • 🧠 analytical
  • A(

    Aklark (Keeno Lee Hector)

    Played by Keeno Lee Hector

    Aklark is probably a key member of the research team or a local guide. He appears to be brave and dependable, assisting in the fight against the creatures amidst the icy wilderness.

    • 🧍‍♂️ guide
    • 🧊 brave
    • 🔬 scientist
  • VM

    Valerie McKee (Jamie-Lee Money)

    Played by Jamie-Lee Money

    Valerie McKee is a young Graboid hunter and researcher, eager and determined. She likely exhibits bravery and a quick thinking nature, crucial in the fight for survival against the Graboids.

    • 🌟 brave
    • 🧠 clever
    • 🎯 determined
  • DR

    Dr. Rita Sims (Tanya van Graan)

    Played by Tanya van Graan

    Dr. Rita Sims is a scientist focused on understanding and combating the Graboids. She displays intelligence and dedication, driving the research efforts and aiding in saving the group from the threats.

    • 🧬 scientist
    • 🧠 intelligent
    • 💡 resourceful
Setting

Where and When Is Tremors: A Cold Day in Hell Set?

Tremors: A Cold Day in Hell is set in Canada's Nunavut Territory (Contemporary). Here is why the time and place matter to the story.

When

Contemporary

The movie is set in the present day, during a period of unusual Arctic heat temperatures that have made the region more accessible and susceptible to unusual wildlife activity. The events unfold in a time when scientific research and military interests intersect amidst environmental changes, highlighting modern concerns about climate and bioweapons.

Where

Canada's Nunavut Territory

Nunavut is a vast, sparsely populated region in northern Canada known for its Arctic climate and expansive glaciers. It features rugged terrain, ice-covered landscapes, and unique ecosystems that are exposed to extreme weather conditions. The area is a remote, pristine environment that becomes a dangerous battleground in the movie.

  • 🌨️ Arctic
  • ❄️ Icy
  • 🌍 Remote
  • 🧭 Wilderness
Themes

What Are the Themes of Tremors: A Cold Day in Hell?

2 ideas the story keeps returning to, among them Bio-Weapons and Environmental Change.

  1. 01

    Bio-Weapons

    The movie explores the dangers of developing bio-weapons and the ethical implications of genetic manipulation. It depicts how military research can backfire when creatures like Graboids are exploited as weapons, leading to catastrophic consequences. The story emphasizes the importance of responsibility in scientific innovation.

  2. 02

    Environmental Change

    The Arctic heat and melting glaciers serve as a backdrop for themes of environmental instability and human interference with nature. These changes facilitate the dangerous resurgence of Graboids and highlight the impact of climate shifts on local ecosystems and scientific exploration strategies.

Tone & mood

What Kind of Film Is Tremors: A Cold Day in Hell?

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

Tone
Tense
Pacing
Fast
Story
Straightforward
Intensity
High
Ending
Happy

A fast-paced and tense creature-feature thriller that maintains constant suspense through dangerous monster attacks and a race against time to survive and cure a deadly parasite.

  • tense
  • suspenseful
  • anxious
  • claustrophobic
  • urgent
  • action-packed
  • monster attack
  • survival
  • pandemic threat
  • corporate conspiracy

Content notes: animal attack, body horror, infection, scientist death.

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12 films close to Tremors: A Cold Day in Hell in story and themes that have a full plot summary here: Tremors (1990) and Tremors: Shrieker Island (2020) lead.

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Tremors: A Cold Day in Hell Plot Questions

5 quick answers about Tremors: A Cold Day in Hell, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is Tremors: A Cold Day in Hell about?

In the frozen reaches of Canada’s Nunavut Territory, a remote research outpost sits amid endless white, its purpose cloaked in secrecy. Beneath the ice‑capped landscape, something far larger than the terrain itself stirs: enormous subterranean worms that have become the unlikely focus of a covert…

Read the full plot summary

When and where does Tremors: A Cold Day in Hell take place?

Tremors: A Cold Day in Hell is set in Canada's Nunavut Territory (Contemporary). The movie is set in the present day, during a period of unusual Arctic heat temperatures that have made the region more accessible and susceptible to unusual wildlife activity.

The setting explained

Who are the main characters in Tremors: A Cold Day in Hell?

The story follows Hart Hansen (Kiroshan Naidoo) (played by Kiroshan Naidoo), Aklark (Keeno Lee Hector) (played by Keeno Lee Hector), Valerie McKee (Jamie-Lee Money) (played by Jamie-Lee Money) and Dr. Rita Sims (Tanya van Graan) (played by Tanya van Graan).

All the characters

What are the main themes of Tremors: A Cold Day in Hell?

The summary picks out 2 themes: Bio-Weapons and Environmental Change.

The themes explained

Who directed Tremors: A Cold Day in Hell?

Tremors: A Cold Day in Hell (2018) was directed by Don Michael Paul and runs 1 hour 38 minutes.

Don Michael Paul’s films

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