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Electronic Labyrinth: THX 1138 4EB (1967) movie poster

Plot Summary

Electronic Labyrinth: THX 1138 4EB (1967) Plot Summary Explained

Release, runtime and language
1967 · 15 mins · English
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Directed by
George Lucas
Starring
Ralph Stell, Joy Carmichael, Marvin Bennett, Dan Natchsheim, David Munson

In a dystopian underground city, THX 1138 4EB darts through cramped passageways, fleeing his controlled community. State surveillance—cameras and computers—pursues him, but he eludes capture, breaking a door and running toward the horizon. Authorities later inform his partner, YYO 7117, that THX has perished, masking his escape.

On this page (6)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 Movie threads
  5. 5 Movies like Electronic Labyrinth: THX 1138 4EB
  6. 6 Every angle
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Full plot summary · contains spoilers

What Happens in Electronic Labyrinth: THX 1138 4EB: Full Plot Summary

The whole story of Electronic Labyrinth: THX 1138 4EB (1967) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

In a future governed by a tightly controlled, technologically driven regime, the film unfolds on a dated May 14, 2187 and leans into the tension between personal longing and an all-seeing state. In a world where daily life is tracked and regulated, YYO 7117 is questioned about her feelings for her mate THX 1138, described as a sexually conceived eros body. Through clipped radio messages, computer operators monitor THX 1138 as he is spotted sprinting through a corridor, illustrating how intimate life is surveilled and managed.

When confronted, THX 1138 refuses a direct order to stop and escapes toward the lower levels, triggering a response from the operators who unleash a painful mind-block. The struggle between control and autonomy intensifies as the mind-block proves difficult to maintain, and THX 1138 seems to resist its effects long enough to keep moving. The pursuit is intensified by an enhanced perfect body drawn into the chase, its presence a stark reminder of the regime’s relentless push to suppress individuality and desire.

The chase leads through the labyrinthine lower levels, where the couple finally faces the oppressive proxy of the system. They confront and kill the perfect body, a moment that shocks the operators and signals a crack in the machinery of surveillance. THX 1138 reaches a door, pries it open, and escapes the structure, breaking free from the claustrophobic grip of the installation. As THX 1138 runs into the countryside toward the setting sun, the government feeds YYO 7117 a lie—that THX has “destroyed themself”—and offers instructions on how to request a new mate, revealing the cold mechanism by which the state maintains control over reproduction and companionship.

> The USC program guide accompanying the film describes it as a "nightmare impression of a world in which a man is trying to escape a computerized world which constantly tracks his movements."

Last updated: March 05, 2026 at 18:40

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Plot questions answered

Electronic Labyrinth: THX 1138 4EB Plot Explained: Your Questions Answered

The questions people ask most about Electronic Labyrinth: THX 1138 4EB (1967): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

What does 'eros body' mean in the movie

An 'eros body' refers to a human that was sexually conceived, as opposed to being artificially produced like most citizens in this society. THX 1138 is described as an eros body, making him somewhat unusual in a regime that tightly controls reproduction. The term suggests he was born through natural means rather than the programmed reproductive system that dominates this dystopian world.

Foreshadowing: The interrogation scene first introduces the concept when YYO 7117 is questioned about her feelings for THX, hinting at his unique status.

  • eros body
  • thx 1138
  • reproduction
  • sexual conception
  • controlled society
Q2

Why does THX 1138 decide to run away

THX 1138 decides to escape after refusing a direct order to stop while being monitored through the surveillance system. His refusal appears to be an act of rebellion against the constant tracking and control. Once confronted, he chooses to flee rather than submit to the regime, triggering the intense chase through the lower levels.

Foreshadowing: Earlier scenes show THX on camera running through corridors, with operators tracking his every move, setting up his decision to resist.

  • escape
  • rebellion
  • thx 1138
  • resistance
  • surveillance
  • running away
Q3

What is the mind-block that operators use on THX

The mind-block is a painful neurological control device deployed by the system's operators to suppress THX's autonomy and force him to comply. It acts as a form of psychological punishment designed to incapacitate anyone who defies the regime. THX manages to fight through the agonizing constraint and defeat it, demonstrating remarkable resistance to the state's control mechanism.

Foreshadowing: Operators discuss deploying the mind-block after THX refuses to stop, framing it as their primary tool for maintaining compliance.

  • mind-block
  • neurological control
  • torture
  • compliance
  • operators
  • resistance
Q4

What is the 'perfect body' chasing THX

The perfect body is an enhanced, technologically engineered enforcer created by the regime to pursue and capture dissenters. It represents the system's most advanced instrument of control. The couple eventually confronts and kills the perfect body, shocking the operators who believed this creation was unstoppable.

Foreshadowing: The operators enhance their response by releasing the perfect body after the mind-block fails, escalating the pursuit to its most dangerous level.

  • perfect body
  • enforcer
  • chase
  • enhanced human
  • regime
  • pursuit
Q5

Why does YYO 7117 stay in the city instead of escaping with THX

YYO 7117 remains behind because the narrative focuses on THX's individual escape. After THX breaks through the exterior door and runs into the countryside, YYO is left within the system. The government then deceives her, claiming THX destroyed themselves, which suggests she either couldn't or chose not to flee at that moment.

Foreshadowing: The final government scene shows YYO being informed of THX's supposed death while she's still inside the controlled city.

  • yyo 7117
  • mate
  • left behind
  • escape
  • separation
  • government lie
Q6

Why does the government tell YYO that THX destroyed themselves

The government lies to maintain control over the population by concealing successful acts of resistance. By telling YYO that THX destroyed themselves rather than revealing he escaped, the regime prevents others from learning that escape is possible. This deception also allows the system to continue its policies of mate reassignment without acknowledging defection.

Foreshadowing: This lie appears in the final scene, where officials offer YYO instructions on requesting a new mate, reinforcing the state's control over relationships.

  • government lie
  • deception
  • thx death
  • population control
  • mate replacement
  • state control
Q7

How does THX manage to escape the underground city

THX escapes by reaching an exterior door in the lower levels, forcing it open despite the regime's barriers. He then runs through the countryside toward the sunset, leaving the city's surveillance network behind. The escape is portrayed as almost miraculous given the constant monitoring and control systems in place.

Foreshadowing: The chase through the labyrinthine lower levels builds toward this climactic moment of breaking through the final barrier.

  • escape
  • exterior door
  • lower levels
  • countryside
  • freedom
  • breaking through
Q8

What does the ending imply about THX's fate

The ending leaves THX's ultimate fate ambiguous, he escapes into open countryside, suggesting freedom is possible, but the regime's lie about his death and continued control over YYO indicates the system remains powerful. The final shot emphasizes the tension between individual liberation and the state's enduring grip on society.

Foreshadowing: The contrast between THX running toward the sunset and the cold government deception creates the unresolved tension that defines the ambiguous ending.

  • ending
  • ambiguous fate
  • freedom
  • countryside
  • sunset
  • escape outcome
Q9

How does the surveillance system monitor citizens

The surveillance system uses cameras, computers, and radio tracking to monitor every movement. Operators in a control room watch citizens through feeds and coordinate responses to any deviation. The system tracks intimate details including relationships and emotions, as shown when YYO is interrogated about her feelings for THX.

Foreshadowing: Early scenes establish the constant monitoring through radio exchanges between operators tracking THX's location.

  • surveillance
  • cameras
  • monitoring
  • control room
  • tracking
  • operators
Q10

Why is THX also called THX 1138 4EB

The suffix '4EB' appears to designate THX as a specific version or iteration within the system. The full designation 'THX 1138 4EB' suggests a cataloging system typical of a regime that treats individuals as numbered products. This naming convention emphasizes how the state reduces citizens to identifiable units rather than treating them as individuals.

Foreshadowing: The title itself establishes this designation from the beginning, indicating THX's identity within the controlled system.

  • thx 1138 4eb
  • designation
  • naming
  • system
  • identification
  • 编号

Movie threads

More Movies Like Electronic Labyrinth: THX 1138 4EB, by Mood & Story

Curated lists built around what makes Electronic Labyrinth: THX 1138 4EB tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Dystopian Escape Thrillers like Electronic Labyrinth: THX 1138 4EB

Desperate sprints for freedom against all-seeing, dehumanizing control. Discover movies like Electronic Labyrinth: THX 1138 4EB, featuring intense chases through oppressive futures. If you liked the desperate fight for freedom against a controlling state, you'll find similar sci-fi stories of rebellion and surveillance here.

  • anxious
  • claustrophobic
  • paranoid
  • futuristic
  • desperate
  • cold
  • Tone: tense, bleak, paranoid
  • Pacing: fast, relentless
Why these movies?

The story pattern: The narrative follows a straightforward, fast-paced escape plot. A character becomes aware of their oppression within a rigidly controlled society and makes a desperate, often improvised, bid for freedom. The conflict is a direct confrontation between the individual and the system, typically involving evading high-tech surveillance and relentless pursuers.

Why they belong together: These films are grouped by their shared high-intensity, tense tone and fast pacing. They create a cohesive experience of anxiety and paranoia, rooted in a common thematic focus on rebellion, dehumanization, and the use of technology for control. The visual and atmospheric vibe of a sterile, cold, and confined dystopia is a key connector.

Movies with Ambiguous Escapes like Electronic Labyrinth: THX 1138 4EB

Characters break free, but their ultimate fate and future remain uncertain. Find films similar to Electronic Labyrinth: THX 1138 4EB where characters achieve a hard-won escape into an uncertain future. These stories share an ambiguous, thought-provoking ending that focuses on the act of liberation rather than a tidy resolution.

  • ambiguous
  • thought-provoking
  • tense
  • hopeful
  • uncertain
  • cathartic
  • Tone: tense, contemplative, uncertain
  • Pacing: variable, building to a climax
Why these movies?

The story pattern: The narrative builds towards a climax where the protagonist physically escapes their confines—be it a prison, a system, or a toxic environment. The story concludes at the moment of breakout or shortly after, refusing to show a clear resolution. The emotional journey is one of triumph mixed with trepidation, emphasizing the price of freedom and the anxiety of the unknown.

Why they belong together: These films are connected by their shared ambiguous ending feel and medium emotional weight. They prioritize thematic resonance over narrative closure, leaving the audience with questions rather than answers. The shared experience is one of cathartic release immediately followed by contemplative uncertainty, making the stories linger long after the credits roll.

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Every angle

Electronic Labyrinth: THX 1138 4EB (1967) Explained: Plot, Timeline & Characters

Everything about Electronic Labyrinth: THX 1138 4EB in one place: what happens in the plot summary, the timeline in chronological order, the characters and meaning and a spoiler-free summary. What's After the Movie adds the cast, box office and post-credit scenes.

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