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The Manhattan Project (1986) Plot Summary & Timeline

The Manhattan Project (1986) movie poster

The Manhattan Project is a 1986 sci-fi and thriller film directed by Marshall Brickman, running 1 hour 57 minutes. This page retells the whole story in 592 words (about 3 minutes to read) and covers 15 key events in order, 4 characters, where and when it is set and 3 themes. Looking for the cast, ratings and where to stream it? See the movie page for The Manhattan Project.

to read the plot summary
3 min
key events in the timeline
15
characters profiled
4
themes explained
3
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The Manhattan Project (1986) movie poster
Released
Runtime
1h 57m
Genres
Sci-Fi, Thriller
Original language
English
No spoilers

What Is The Manhattan Project About?

The premise of The Manhattan Project in 318 words, with nothing given away. The full story follows below.

In the quiet town of Ithaca, a remote research facility hides behind the façade of a medical corporation, offering a sanctuary for discovery that few outside its walls can imagine. At its center is John Mathewson, a once‑celebrated physicist whose brilliance is matched only by the shadows gathering around his personal life. As he confronts a stark diagnosis that forces him to reassess his future, the tension between his relentless pursuit of scientific breakthroughs and the fragile state of his own health becomes a silent undercurrent to everything he does.

When the lab’s rigid anonymity collides with ordinary life, John meets Elizabeth Stephens, a pragmatic real‑estate agent searching for a fresh start, and her bright, inquisitive son Paul. Their unexpected connection offers John a glimpse of the ordinary world he has long been estranged from, while also pulling him into a delicate family dynamic fraught with unspoken expectations. Alongside them, Jenny Anderman, Paul’s ambitious girlfriend with a penchant for journalism, adds a youthful curiosity that both brightens and complicates the already precarious balance of their lives.

The atmosphere in the town is one of restrained suspense, where the quiet streets seem to pulse with the hidden weight of the laboratory’s secret work. A military presence, embodied by Lt. Colonel Conroy, looms at the periphery, reminding everyone that the stakes extend far beyond personal ambition. As each character navigates their own doubts and desires, the story weaves a mood of uneasy contemplation, hinting at the profound impact that one man’s choices may have on those he cares about most.

Against this backdrop of scientific wonder, familial ties, and looming authority, the film asks how far one can push the boundaries of knowledge before the consequences begin to echo through the lives of the innocent. The tone remains taut yet human, inviting the audience to feel the weight of responsibility and the fragile hope that redemption might still be possible.

Full plot

What Happens in The Manhattan Project?

The complete story of The Manhattan Project, from the first scene to the last, in 592 words (about 3 minutes). Spoilers throughout.

Spoilers ahead

In the quiet town of Ithaca, located in upstate New York, Dr. John Mathewson finds himself at the center of a significant discovery when he stumbles upon a revolutionary method for refining plutonium with unparalleled purity. Seizing this rare opportunity, the United States government adopts a guise as a medical corporation, providing him with an advanced laboratory. As John acclimates to his new environment, he unexpectedly meets Elizabeth Stephens, a real estate agent, while on the hunt for an ideal apartment. What starts as an innocent attempt to charm her takes an unforeseen twist when he invites her teenage son, Paul, for a tour of the lab, hoping to leave a positive impression.

However, Paul’s keen intellect and fascination with science set him apart from the typical teenager. When he accidentally discovers an extraordinarily rare five-leaf clover within the lab’s grounds, his suspicion about the true nature of the facility’s activities deepens. Alongside his girlfriend, Jenny Anderman, who dreams of being a journalist, they decide to investigate further, culminating in a daring plan to steal a sample of plutonium to serve as proof of their findings.

Determined that having plutonium alone won’t suffice to unveil the lab’s covert operations, Paul and Jenny design an ambitious scheme to construct the world’s first privately developed nuclear device. They cleverly disguise their experiment as a school project for the New York Science Fair, with Paul convincing his mother and classmates that the focus is on hamsters raised in darkness. Meanwhile, John remains blissfully unaware of the brewing turmoil, increasingly secure in the lab’s capacity to maintain its façade.

Things take a dramatic turn when lab officials realize that a crucial container of plutonium has mysteriously been exchanged for a bottle of shampoo embellished with glitter. Prompting swift action, a military investigative unit, led by Lt. Colonel Conroy, arrives on site, quickly pinpointing Paul as the prime suspect in the theft. As agents close in on him, John feels the weight of responsibility and arranges a discreet meeting with Paul, hoping to persuade him to surrender the explosive device before events spiral out of control.

Despite John’s intentions, Paul and Jenny find a way to evade capture during the chaotic science fair, leading them to devise another strategy to expose the lab’s dark secrets. In a bold move, Paul returns to the laboratory bearing the nuclear device, encircled by snipers and agents ready to take action. Amidst stalled negotiations and rising tensions, John attempts to advocate for Paul, insisting the teenager does not pose a real threat.

As the radioactive energy from the plutonium within the device takes hold, the countdown clock springs to life, its ominous rhythm quickening. Paul suggests relocating the bomb to a nearby quarry, but John’s admission that he underestimated the ramifications of his plutonium refining ignites fear in everyone present: a detonation would unleash destruction far exceeding that of the Hiroshima bombing.

Amid escalating panic, all involved – including Paul, John, and Conroy – drop their weapons and join forces to neutralize the dangerous device. With time slipping away, they exploit every ounce of knowledge and collaboration to disassemble the bomb. In a heart-stopping climax, they achieve successful deactivation just seconds before disaster strikes.

As calm returns, Conroy prepares to detain Paul. Yet, John stands firm against compliance. With a dramatic gesture, he throws open the laboratory doors, unveiling a gathering crowd outside that includes Jenny and the media. The scene fades to black, leaving Paul to depart unhindered, creating a lingering sense of uncertainty and unspoken repercussions in his wake.

Timeline

The Manhattan Project Timeline: Every Key Event in Order

15 key events in the order they happen, from “Dr. Mathewson's Discovery” to “Uncertain Resolution”. 12 events name a place, across 4 locations.

  1. 1

    Dr. Mathewson's Discovery

    In the quiet town of Ithaca, Dr. John Mathewson makes a groundbreaking discovery by refining plutonium with unmatched purity. This unexpected innovation catches the attention of the United States government, who decides to leverage this development for their own purposes.

    Where:Ithaca, New York

  2. 2

    Government's Deception

    The government, under the guise of a medical corporation, sets up an advanced lab for John. With lofty ambitions, they aim to conceal their true intentions while utilizing John's remarkable technological capabilities.

  3. 3

    Meeting Elizabeth Stephens

    While searching for an apartment, John has a chance encounter with Elizabeth Stephens, a local real estate agent. Their interaction starts innocently but gradually reveals John's intent to impress her, leading to a pivotal moment.

    Where:Ithaca, New York

  4. 4

    Paul's Curiosity

    John’s invitation to Elizabeth's teenage son, Paul, for a lab tour brings unexpected intrigue. Paul's exceptional intelligence surfaces when he stumbles upon a rare five-leaf clover, igniting his curiosity about the laboratory's true operations.

    Where:Inside the laboratory

  5. 5

    Jenny's Investigative Spirit

    Paul, alongside his ambitious girlfriend Jenny, decides to dig deeper into the mysteries surrounding the lab. Their bond strengthens as they choose to investigate further, culminating in a reckless plot to steal plutonium, driven by their desire for truth.

  6. 6

    The Science Fair Scheme

    Crafting a clever cover story, Paul and Jenny present their scheme as a school project, aiming to build a nuclear device. They convince their friends and families that their project centers around hamsters raised in darkness, hiding their true intentions.

    Where:New York Science Fair

  7. 7

    Plutonium Heist

    In a shocking turn of events, laboratory officials discover that a container of plutonium has been swapped with a glittery bottle of shampoo. This bizarre incident triggers an immediate military investigation, marking the beginning of Paul’s entanglement in the unfolding chaos.

    Where:Laboratory

  8. 8

    Military Investigation

    Led by Lt. Colonel Conroy, a military unit sweeps into the lab, quickly identifying Paul as a prime suspect in the plutonium theft. The situation escalates as agents close in, creating a tense atmosphere of uncertainty and urgency.

    Where:Laboratory

  9. 9

    John's Intervention

    Feeling the weight of the impending disaster, John seeks a private meeting with Paul. His goal is to persuade the teenager to relinquish the explosive device, fearing the consequences of the situation spiraling out of control.

  10. 10

    Chaos at the Science Fair

    Despite John's intentions, Paul and Jenny manage to evade capture during the science fair's pandemonium. This prompts them to concoct another daring plan to reveal the lab's darker secrets to the world.

    Where:New York Science Fair

Show the other 5 events of The Manhattan Project
  1. 11

    The Climactic Standoff

    In a bold act, Paul returns to the laboratory with the nuclear device in hand, surrounded by snipers and military officials ready to spring into action. The tense standoff escalates as negotiations stall, increasing the stakes for everyone involved.

    Where:Laboratory

  2. 12

    The Countdown Begins

    As tensions rise, the nuclear device begins its ominous countdown. Paul proposes moving the bomb to a nearby quarry, but John's realization of the plutonium's potential effects instills fear into everyone present, heightening the peril of the situation.

    Where:Laboratory

  3. 13

    Team Effort to Disarm

    In a desperate bid to avert catastrophe, everyone drops their weapons and unites to disarm the nuclear device. Together, they pool their knowledge and resources, working against the clock to dismantle the threat before time runs out.

    Where:Laboratory

  4. 14

    Successful Deactivation

    In a heart-stopping climax, the group successfully deactivates the bomb just seconds before detonation. Their collaborative efforts underscore the significance of unity in the face of chaos, allowing them to avert imminent disaster.

    Where:Laboratory

  5. 15

    Uncertain Resolution

    As calm returns, Lt. Colonel Conroy prepares to detain Paul. However, John intervenes, dramatically revealing the gathering crowd outside, including media and Jenny, leaving the outcome of the situation abruptly unresolved, full of unspoken consequences.

    Where:Laboratory

Characters

Who Are the Main Characters in The Manhattan Project?

4 characters, among them Dr. John Mathewson, Paul and Jenny Anderman: who each one is and the part they play in the story. 1 of them link to the actor’s page.

  • John Lithgow as Dr. John Mathewson in The Manhattan Project

    Dr. John Mathewson

    Played by John Lithgow

    A driven scientist who uncovers a groundbreaking method for refining plutonium. John embodies both ambition and naivety, as his pursuit of scientific achievement blinds him to the ethical hazards lurking in his discoveries.

    • 👨‍🔬 Scientist
    • ⚗️ Ambitious
  • P

    Paul

    A teenage boy with a natural affinity for science, he is intelligent and resourceful. Paul's curiosity leads him to investigate the shadows of the laboratory, and his resolve propels the narrative, showcasing the courage of youth.

    • 👦 Teenager
    • 🔍 Curious
  • JA

    Jenny Anderman

    Paul's girlfriend who aspires to be a journalist. Jenny's ambition and desire for truth complement Paul's scientific curiosity and drive their investigation forward, highlighting the theme of youthful determination.

    • 👩‍💻 Journalist
    • 💡 Ambitious
  • LC

    Lt. Colonel Conroy

    A military investigator determined to uncover the truth behind the suspicious activities at the lab. Conroy represents authority and responsibility in the narrative, struggling to balance the need for security with the realities of innocent intentions.

    • 👮 Authority
    • ⚔️ Determined
Setting

Where and When Is The Manhattan Project Set?

The Manhattan Project is set in Ithaca and New York. Here is why the place matters to the story.

When

The events of the film take place in a contemporary setting, where advancements in science and technology are at the forefront. Discussions of nuclear energy and private experimentation highlight the period's societal tensions surrounding science and ethics.

Where

Ithaca, New York

Ithaca is a picturesque town nestled in upstate New York, known for its breathtaking gorges, waterfalls, and vibrant college town atmosphere. This serene location serves as the backdrop for significant scientific discoveries and youthful ambitions, juxtaposing tranquility with high-stakes drama.

  • 🏙️ City
  • 🌳 Nature
Themes

What Are the Themes of The Manhattan Project?

3 ideas the story keeps returning to, among them Ethics of Science, Youthful Curiosity and Tension and Resolution.

  1. 01

    Ethics of Science

    The film explores the moral implications of scientific discovery and the potential consequences of unchecked ambition. It raises questions about the responsibility of scientists in the pursuit of knowledge, particularly in sensitive domains such as nuclear energy.

  2. 02

    Youthful Curiosity

    The theme of youthful curiosity is embodied by Paul and Jenny, whose adventurous spirit drives them to uncover hidden truths. Their determination illustrates how the inquisitive nature of youth can challenge established norms and authority.

  3. 03

    Tension and Resolution

    The escalating tension surrounding the nuclear device serves as a pivotal element in the film, culminating in a thrilling climax. The collaboration between characters in moments of crisis highlights the potential for unity in the face of danger.

Tone & mood

What Kind of Film Is The Manhattan Project?

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

Tone
Tense
Pacing
Steady
Story
Moderate
Intensity
High
Ending
Bittersweet

A tense Cold War thriller that builds from scientific curiosity into a heart-pounding race against time, blending teenage ingenuity with the chilling consequences of nuclear proliferation in a gripping and morally complex story.

  • suspenseful
  • anxious
  • dangerous
  • urgent
  • clandestine
  • confrontational
  • cold war
  • nuclear weapons
  • teenage rebellion
  • whistleblower

Content notes: child endangerment, nuclear threat.

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FAQ

The Manhattan Project Plot Questions

5 quick answers about The Manhattan Project, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is The Manhattan Project about?

In the quiet town of Ithaca, a remote research facility hides behind the façade of a medical corporation, offering a sanctuary for discovery that few outside its walls can imagine.

Read the full plot summary

When and where does The Manhattan Project take place?

The Manhattan Project is set in Ithaca and New York. The events of the film take place in a contemporary setting, where advancements in science and technology are at the forefront.

The setting explained

Who are the main characters in The Manhattan Project?

The story follows Dr. John Mathewson (played by John Lithgow), Paul, Jenny Anderman and Lt. Colonel Conroy.

All the characters

What are the main themes of The Manhattan Project?

The summary picks out 3 themes: Ethics of Science, Youthful Curiosity and Tension and Resolution.

The themes explained

Who directed The Manhattan Project?

The Manhattan Project (1986) was directed by Marshall Brickman and runs 1 hour 57 minutes.

Marshall Brickman’s films

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