Editing THX 1138 (section)

==Plot==
[[File:THX 1138.jpg|thumb|The film's title card|left]]
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In the [[dystopia]]n future, [[sexual intercourse]] and [[reproduction]] are prohibited, and [[Psychoactive drug|mind-altering drugs]] are mandatory to enforce compliance among the citizens and to ensure their ability to conduct dangerous and demanding tasks. Workers wear identical white uniforms and have shaven heads to emphasize uniformity, likewise with police [[Android (robot)|androids]] who wear black and monks who are robed. Instead of names, people have designations with three arbitrary letters (referred to as the "prefix") and four digits, shown on an identity badge worn at all times.

At their jobs in central video control centers, SEN 5241 (a man) and LUH 3417 (a woman) keep surveillance on the city. LUH has a male roommate named THX 1138, who works in a factory producing android police officers. At the beginning of the story, THX finishes his shift while the loudspeakers urge the workers to "increase safety"—and congratulate them for only losing 195 workers in the last period—to the competing factory's 242.

On the way home, he stops at a confession booth in a row of many, and relates his concerns and mumbles prayers about "party" and "masses", under the [[Jesus|Jesus Christ]]-esque portrait of "OMM 0000". A soothing voice greets THX, and OMM ends the [[confession]] with a parting salutation: "You are a true believer, blessings of the State, blessings of the masses. Work hard, increase production, prevent accidents, and be happy."

At home, THX takes his drugs and watches [[Holography|holobroadcasts]] while engaging with a masturbatory device. LUH secretly substitutes pills in her possession for THX's medications, causing him to develop nausea, anxiety, and sexual desires. LUH and THX become involved romantically and have sex. THX is later confronted by SEN, who attempts to arrange that THX become his new roommate, but THX files a complaint against SEN for the illegal shift pattern change.

Without drugs in his system, THX falters during a critical and hazardous phase of his job, and a control center engages a "mind lock" on THX which raises the level of danger. After the release of the mind lock, THX makes the necessary correction to that work phase. THX and LUH are arrested and THX undergoes drug therapy and medical analysis. He enjoys a brief reunion with LUH, but it is disrupted shortly after she reveals her pregnancy.

At THX's trial, it is stated that THX was clinically born. It is decided that it would be inefficient to terminate THX, so THX is sentenced to prison, alongside SEN. THX and SEN walk to search for an exit. Eventually they are joined by [[Holography|hologram]] actor SRT 5752, who starred in the holobroadcasts. SRT shows them the exit and suggests to them that they may have been going in circles. During the escape, THX and SRT are separated from SEN. Chased by the police androids, THX and SRT are trapped in a control center, from which THX learns that LUH has been "consumed", and her name has been reassigned to her [[fetus]], numbered 66691, in a growth chamber. SEN eventually escapes to an area reserved for the monks of OMM, where a monk notices that SEN has no identification badge. SEN attacks him and later wanders into a child-rearing area, strikes up a conversation with children, and sits aimlessly until police androids apprehend him. THX and SRT steal two cars. SRT struggles to figure out how to drive the car. When SRT finally gets the car to move, he immediately crashes his car into a concrete pillar. After the crash, SRT is not found in the vehicle.

Pursued by two police androids on motorcycles, THX flees to the limits of the city. Android officers continue to pursue him as he briefly struggles with simian-like creatures identified as "shell dwellers" and arrives at a vertical shaft with an escape ladder. The android officers are ordered by Central Command to cease pursuit, on the grounds that the expense of his capture exceeds their allocated budget for THX. In a last-ditch attempt to convince THX to surrender, the officers claim that the area outside the "city shell" is uninhabitable, but he is undeterred and continues up the ladder. The city is then revealed to be entirely underground, while THX has escaped onto the surface, where he witnesses the sun setting.