Skip to content
What's After the Movie?
Plot summary

The Fly (1986) Plot Summary & Timeline

The Fly (1986) movie poster

The Fly is a 1986 sci-fi and thriller film directed by David Cronenberg, running 1 hour 36 minutes. This page retells the whole story in 654 words (about 3 minutes to read) and covers 14 key events in order, 3 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 Fly.

to read the plot summary
3 min
key events in the timeline
14
characters profiled
3
themes explained
3
Loading streaming availability…
The Fly (1986) movie poster
Released
Runtime
1h 36m
Director
David Cronenberg
Original language
English
No spoilers

What Is The Fly About?

The premise of The Fly in 313 words, with nothing given away. The full story follows below.

In a sleek, minimalist laboratory that hums with the promise of future travel, Seth Brundle pours his restless genius into a daring experiment: a pair of teleportation pods that can dissolve matter in one location and re‑assemble it in another. The space is filled with the soft glow of instruments, the faint scent of ozone, and an undercurrent of tension that comes from working on technology that could reshape humanity. The atmosphere balances clinical precision with an unsettling sense that the boundaries of nature are being stretched beyond what anyone can fully control.

When the scientist’s daughter arrives for a brief, curious visit, the scene shifts from sterile curiosity to a more intimate, almost everyday domesticity. Their relationship is quietly tender—her youthful wonder contrasting with his obsessive focus—yet an undercurrent of protectiveness threads through every interaction. The film uses this dynamic to heighten the stakes, reminding the audience that the breakthroughs in the lab could have personal, even tragic, repercussions.

A seemingly innocuous mishap occurs when a common housefly becomes an unintended passenger in the teleportation process. The accident ignites a cascade of unsettling changes that begin to affect Seth on both physical and psychological levels. The tone here is unmistakably a blend of science‑fiction wonder and creeping horror; bright, futuristic visuals are tinged with shadows that suggest something is slipping beyond the realm of the rational. The story lingers on the palpable anxiety of a brilliant mind confronting a phenomenon that defies his expertise.

As the transformation subtly progresses, Seth becomes consumed by a desperate quest for a remedy, driven by a growing awareness that his altered state could pose a danger to the one person he wishes to protect most. The film maintains a tense, atmospheric rhythm, inviting viewers to wonder how far a visionary will go when the very tools meant to elevate humanity threaten to unravel it from within.

Full plot

What Happens in The Fly?

The complete story of The Fly, from the first scene to the last, in 654 words (about 3 minutes). Spoilers throughout. Names in the text link to 2 cast member pages.

Spoilers ahead

Seth Brundle, played by Jeff Goldblum, is an extraordinary and somewhat unconventional inventor who has devoted his life to his groundbreaking work. During an elaborate party hosted by his financial backers at Bartok Industries, he crosses paths with Veronica Quaife, a keen journalist from Particle Magazine, portrayed by Geena Davis. Intrigued by Seth’s genius and the potential of his latest invention—the teleporter pods or “telepods”—Veronica is drawn into a whirlwind of scientific promise and personal fascination.

As she visits his apartment, Seth showcases the mechanics of his groundbreaking invention, one that promises to revolutionize transportation by disintegrating matter, sending it across distances, and then reintegrating it. Though initially skeptical, she quickly realizes that this could very well be the invention of the century. Over Seth’s concerns about revealing his work too soon, Veronica enthusiastically approaches her boss and former lover, Stathis Borans, to pitch the story. Paradoxically, Stathis dismisses the telepods as mere illusions, leaving Seth relieved that the world is not yet privy to his unrefined technology, as it still struggles with anything living.

As Veronica immerses herself in Seth’s world, the two form a close bond, leading to romantic sparks flying between them. Seth’s experiments take a shocking turn when he attempts to teletransport a baboon, which results in catastrophic failure as the creature emerges from the device inside out. Yet, undeterred, he shares more intimate moments with Veronica, who becomes enamored with Seth. Their relationship ignites, culminating in passionate encounters that awaken a wild notion in Seth: the idea of using the telepods to influence human behavior.

In an effort to perfect his invention, Seth continues to conduct experiments while Veronica plans a special gift for him. An unexpected encounter with Stathis reignites interest in the story, further complicating the dynamics between the three. Just as Seth achieves a milestone with a successful teleportation of another baboon, an unforeseen incident occurs: he drunkenly decides to transport himself, inadvertently exposing himself to a housefly within the pod. This fateful decision leads to harrowing transformations that start manifesting within Seth.

Over time, Seth experiences alarming physical changes; hair begins to sprout unnaturally on his back, an insatiable craving for sugar takes hold, and he becomes more physically robust, much to the detriment of Veronica, who struggles to keep pace with him. As he spirals further into madness driven by his altered state, his insecurities morph into rage, leaving Veronica terrified of what he may become.

Seth’s descent continues as he seeks out other encounters and ultimately maltreats Veronica, leading her to confront the horrifying truth of his transformation. It becomes evident that he and the fly have merged at a fundamental level, creating a new being he calls Brundlefly. The unraveling horror unfolds as his appearance transforms grotesquely—his body parts decay, showcasing the tragic assimilation of human and insect.

A heart-wrenching month passes before they meet again, during which Seth’s condition worsens drastically, compelling Veronica to seek assistance from Stathis, who warns her of the dire consequences of returning to Seth. Yet, in a moment of desperation, fettered by his fly instincts, Seth takes Veronica hostage, insisting that she must have their unborn child, the last vestige of his humanity.

As the climax nears, a showdown with Stathis reveals the true monstrosity Seth has become. The tension peaks when Stathis intervenes, armed and ready to stop the impending horror. In his final moments, Seth’s very humanity slips away, giving way to the monstrous amalgamation of flesh and machinery that he has become. Brundlefly appeals to Veronica for mercy, for, within the horror, remains the vestiges of the man she once loved. Trapped in unbearable agony, the film reaches a somber conclusion as Veronica, heartbroken, must end the suffering of the creature before her, pulling the trigger that shatters the remnants of their shared existence. As the screen fades to black, the haunting journey of transformation and loss lingers in the minds of viewers.

Timeline

The Fly Timeline: Every Key Event in Order

14 key events in the order they happen, from “Seth Brundle Introduces Telepods” to “Veronica Makes the Ultimate Choice”. 14 events name a place, across 6 locations.

  1. 1

    Seth Brundle Introduces Telepods

    Seth Brundle, a brilliant inventor, reveals his groundbreaking invention, the telepods, at a party hosted by Bartok Industries. These telepods are capable of disintegrating matter, transmitting it across space, and reintegrating it, which excites those present, especially Veronica Quaife, a reporter.

    Where:Bartok Industries party

  2. 2

    Veronica Agrees to Cover Seth's Project

    After a fascinating demonstration of the telepods, Veronica convinces her boss, Stathis Borans, to publish the story about Seth’s invention. Despite some doubts, she decides to track Seth's progress as he works on improving the telepods, agreeing to wait on publishing the story.

    Where:Particle Magazine office

  3. 3

    Seth Tests the Telepods

    Seth decides to test his invention by sending a baboon through the telepods. However, the baboon emerges from the reintegration process inside out, which raises concerns about the telepods' safety and reliability.

    Where:Seth's apartment

  4. 4

    Seth and Veronica Fall in Love

    As Seth continues to work on his telepods, he and Veronica grow closer, eventually confessing their love for one another. Their relationship intensifies, leading to a passionate night together but also igniting Seth's obsession with enhancing his invention.

    Where:Seth's apartment

  5. 5

    Seth Teleports Himself

    After a night of drunken celebration, Seth, feeling threatened by Veronica’s past with Stathis, decides to teleport himself out of spite. Unfortunately, he accidentally teleports with a housefly, which leads to an unexpected and dangerous outcome.

    Where:Seth's apartment

  6. 6

    Strange Changes Begin to Surface

    Following his teleportation, Seth begins to notice alarming physical changes. He exhibits unusual cravings, unexpected strength, and strange hair growth, which he initially dismisses as positive enhancements until they continue to worsen.

    Where:Seth's apartment

  7. 7

    Seth's Transformation Accelerates

    Seth's physical and mental state deteriorates further as he transforms into a grotesque hybrid human-fly creature. He begins to act irrationally, pushing Veronica away and seeking out his primal instincts, which frightens her.

    Where:Seedy bar

  8. 8

    Veronica Learns of Seth's Condition

    Veronica witnesses the severe deterioration of Seth's condition when she decides to confront him. She comes to understand that he is becoming a monster and realizes the risk she faces in being around him.

    Where:Seth's apartment

  9. 9

    Veronica is Pregnant

    Veronica discovers that she is pregnant with Seth's child, a revelation that brings a mix of joy and fear. She confides in Stathis, who cautions her about the potential dangers of returning to Seth in his current state.

    Where:Stathis's office

  10. 10

    Seth Kidnaps Veronica

    In a desperate bid to keep Veronica with him, Seth kidnaps her when she seeks medical help. He believes their unborn child may be the last remnant of his humanity, and he insists she should not abort the baby.

    Where:Doctor's office

Show the other 4 events of The Fly
  1. 11

    Seth's Final Transformation

    As his transformation completes, Seth becomes a monstrous insectoid creature named 'Brundlefly' and loses all human semblance. He reveals to Veronica his plan to use the telepods to combine their forms, hoping to regain his humanity.

    Where:Seth's apartment

  2. 12

    The Final Confrontation

    In a climactic struggle, Seth attempts to force Veronica into the telepod to combine themselves. As he loses control, Veronica fights back and accidentally rips off Seth's jaw, which triggers the last stages of his transformation.

    Where:Seth's apartment

  3. 13

    Brundlefly's Last Request

    Now fully transformed into Brundlefly, Seth pleads for Veronica to end his suffering. Using a claw to point a shotgun at its own head, he silently asks her to kill him, leading to an intense emotional moment.

    Where:Seth's apartment

  4. 14

    Veronica Makes the Ultimate Choice

    Faced with the monstrosity that was once her lover, Veronica finds the strength to pull the trigger. The ending is poignant and tragic, as she mourns the loss of Seth and the man he once was.

    Where:Seth's apartment

Characters

Who Are the Main Characters in The Fly?

3 characters, among them Seth Brundle (Jeff Goldblum), Veronica Quaife (Geena Davis) and Stathis Borans (John Getz): who each one is and the part they play in the story. 2 of them link to the actor’s page.

  • Jeff Goldblum as Seth Brundle (Jeff Goldblum) in The Fly

    Seth Brundle (Jeff Goldblum)

    Played by Jeff Goldblum

    Seth Brundle is an innovative yet reckless inventor whose groundbreaking work on teleportation leads to his horrific transformation. Initially charismatic and passionate, his descent into madness reveals a desperate struggle for control as he battles the monstrous changes within himself. The character embodies the tragic consequences of unchecked ambition.

    • 🧪 Inventor
    • 🦟 Tragically Flawed
  • Geena Davis as Veronica Quaife (Geena Davis) in The Fly

    Veronica Quaife (Geena Davis)

    Played by Geena Davis

    Veronica Quaife is a reporter drawn into the world of scientific discovery and subsequent horror through her relationship with Seth. She is intelligent and resourceful, constantly grappling with her feelings as she witnesses Seth's tragic metamorphosis. Her character highlights the emotional and moral consequences of love in the face of monstrosity.

    • 📝 Journalist
    • ❤️ Love Interest
  • SB

    Stathis Borans (John Getz)

    Stathis Borans is Veronica's ex-lover and a journalist who initially doubts Seth's inventions. As the story unfolds, he transforms from a skeptical observer to an essential ally trying to save Veronica from Seth's horrific fate. His character provides a contrasting perspective on ambition and ethical responsibility in the scientific realm.

    • 📊 Editor
    • 🤨 Skeptic
Setting

Where and When Is The Fly Set?

The Fly is set in Seth Brundle's apartment and Bartok Industries. Here is why the place matters to the story.

When

The movie is set in a contemporary time relative to its 1986 release, reflecting a period of scientific exploration and innovation. This era highlights advancements in technology and raises questions regarding the moral implications of such developments, especially in the field of genetics.

Where

Seth Brundle's apartment, Bartok Industries

Seth Brundle's apartment serves as a hub for his groundbreaking teleportation research. It transforms from a space of innovation to a nightmarish realm reflecting the changes in Seth’s character. Bartok Industries is also essential as it represents the corporate interests surrounding Brundle's invention, emphasizing the tension between scientific ambition and ethical considerations.

  • 🏢 Apartment
  • 🏭 Research Facility
Themes

What Are the Themes of The Fly?

3 ideas the story keeps returning to, among them Transformation, Love and Sacrifice and Ethics of Science.

  1. 01

    Transformation

    The theme of transformation is central to the movie as Seth Brundle evolves into a horrific human-fly hybrid. His physical metamorphosis parallels his psychological decline, illustrating how unchecked ambition can lead to dehumanization. The narrative serves as a cautionary tale about the dangers of pushing scientific boundaries without regard for consequences.

  2. 02

    Love and Sacrifice

    The relationship between Seth and Veronica showcases profound love cut short by tragedy. Veronica’s struggle between her feelings for Seth and the horrors he becomes embodies the theme of sacrifice, illustrating that love can lead to painful choices in desperate situations. Their bond ultimately intensifies the emotional stakes of the narrative.

  3. 03

    Ethics of Science

    The film grapples with the ethical dilemmas of scientific progress, raising questions about the responsibilities that come with innovation. Seth's reckless experimentation with teleportation not only alters his life but also poses risks to others. This theme reflects a broader societal concern regarding the unchecked pursuit of knowledge at any cost.

Tone & mood

What Kind of Film Is The Fly?

Dark in tone, with steady pacing and a straightforward story, going by the plot summary.

Tone
Dark
Pacing
Steady
Story
Straightforward
Intensity
High
Ending
Sad

A steadily paced and deeply unsettling descent into body horror, where a passionate romance curdles into terror as a man's grotesque physical transformation reflects his psychological unraveling, building to a tragic and inevitable conclusion.

  • horrific
  • anxious
  • desperate
  • grim
  • unsettling
  • tragic
  • body horror
  • scientific hubris
  • deterioration
  • loss of humanity

Content notes: body horror, gore, psychological deterioration, hostage situation.

Quiz

How well do you remember The Fly? Test yourself on the story.

Take the quiz
Loading streaming availability…
Read next

Movies Like The Fly With a Plot Summary

6 films close to The Fly in story and themes that have a full plot summary here: The Fly II (1989) and Return of the Fly (1959) lead.

All plot summaries

Missing a Movie Plot Summary?

Tell us which film you want explained next: the full story, the timeline, the characters and the ending.

Request a summary
FAQ

The Fly Plot Questions

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

What is The Fly about?

In a sleek, minimalist laboratory that hums with the promise of future travel, Seth Brundle pours his restless genius into a daring experiment: a pair of teleportation pods that can dissolve matter in one location and re‑assemble it in another.

Read the full plot summary

When and where does The Fly take place?

The Fly is set in Seth Brundle's apartment and Bartok Industries. The movie is set in a contemporary time relative to its 1986 release, reflecting a period of scientific exploration and innovation.

The setting explained

Who are the main characters in The Fly?

The story follows Seth Brundle (Jeff Goldblum) (played by Jeff Goldblum), Veronica Quaife (Geena Davis) (played by Geena Davis) and Stathis Borans (John Getz).

All the characters

What are the main themes of The Fly?

The summary picks out 3 themes: Transformation, Love and Sacrifice and Ethics of Science.

The themes explained

Who directed The Fly?

The Fly (1986) was directed by David Cronenberg and runs 1 hour 36 minutes.

David Cronenberg’s films

Coming soon to your phone

The Plot Explained Movie Summary App

From blockbusters to hidden gems: plot summaries, endings explained and timelines on your phone. Save your favorites and never miss a twist again.

Be the first to know when it launches. Your email stays private, always. Learn more about the app