Tron
Plot - Wikipedia
Kevin Flynn is a young and gifted software engineer who works for the software corporation ENCOM, creating several video games on the company's mainframe after hours, aiming to start his own game company. However, another programmer, Ed Dillinger, locks Flynn out of the system and presents Flynn's work as his own. Dillinger earns himself a series of executive promotions, while Flynn is relegated to working at a video game arcade, featuring the games that he created. Flynn tries to hack into the ENCOM mainframe to find evidence of Dillinger's wrongdoing, but his program, Clu, is caught and defeated by the Master Control Program (MCP).
The MCP, with Dillinger's authorization, shuts down access to the security group Flynn is using, inadvertently locking out another ENCOM employee, Alan Bradley. Alan goes to speak to Dillinger and reveals that he was working on a security program, Tron, which would monitor communications between the MCP and the outside world. After Alan leaves, the MCP confronts Dillinger about this, stating that it cannot afford to have programs monitoring it. It reveals its intention to break into the Pentagon and other military mainframes, claiming it can run things "900 to 1200 times better than any human." When Dillinger attempts to assert his authority, the MCP essentially blackmails him into complying with its wishes.
Meanwhile, Alan and his girlfriend, Dr. Lora Baines, warn Flynn that he has been noticed, but Flynn instead convinces them to sneak him into ENCOM's laser laboratory, where he can forge access to a different security group. Lora, who has been developing a method of digitizing real objects into the computer, sets Flynn down at her terminal in the laser lab, where a laser is pointed directly at the terminal. As Flynn attempts to break into the system, he is confronted by the MCP, who takes control of the laser and suddenly digitizes Flynn into the ENCOM mainframe. Flynn finds himself standing in the digital world, where Programs resemble their human creators, the Users.
Flynn is taken first to a holding pit, where he meets the Program Ram, and then is taken with a number of other Programs to meet Sark, a program that resembles Dillinger. Sark then informs everyone that they can either renounce their belief in the Users and join the MCP, or they will be forced to play games that result in their eventual elimination. Sark in fact knows that Flynn is a User and not a Program but though he immediately has misgivings of harming a User he is forced into compliance by the MCP. Flynn eventually meets Tron (Alan's program), and he, Tron and Ram escape from the Light Cycle arena into the system, prompting Sark to send out his forces in pursuit. Eventually, a tank fires at the group, killing Ram and separating Flynn and Tron. While continuing to follow Tron, Flynn gradually discovers that as a User he possesses god-like powers within the computer dimension, enabling him to manipulate its 'physical' laws at will.
Tron makes his way to an input-output tower, where he receives instructions from Alan on how to destroy the MCP. He then makes a getaway aboard a Solar Sailer simulation with the help of Yori (Lora's program), and is reunited with Flynn, disguised as one of Sark's forces. At this point, Flynn reveals that he is actually a User. Sark's ship then collides with the Solar Sailer, capturing Flynn and Yori. While Tron is believed to have been destroyed in the collision, he in fact escapes aboard Sark's shuttle. Sark de-rezzes his command ship, but Flynn manages to keep it and Yori alive, and he pilots the ship toward the MCP.
The MCP has gathered a number of Programs and tells them that they will become a part of it. Sensing Tron's presence nearby, the MCP sends Sark out to investigate, resulting in a battle between Sark and Tron. Tron gains the upper hand and severely damages Sark, prompting the MCP to transfer its functions to its commander and causing him to grow to enormous size. Tron begins attacking the MCP directly, but his attacks are blocked by a shield. Flynn then jumps into the MCP's cone to distract it long enough for Tron to throw his disc into the core. This destroys both MCP and Sark and frees the system, and Flynn is sent back to the terminal in ENCOM's laser lab, where a nearby printer is printing the evidence he needs to prove Dillinger's wrongdoing.
Dillinger comes into work the next morning to find the MCP non-functional and the same evidence displayed on his screen. Flynn later becomes the new CEO of ENCOM.
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