TRON
Sometime in the 1950s, scientist Walter Gibbs starts a small computer company from his garage. Three decades later, Gibbs’ company ENCOM is the world’s leading computer corporation, which has at its core an artificial intelligence known as the Master Control Program (the MCP, originally developed from a simple chess program). 
In the early 1980s, an unscrupulous ENCOM programmer named Edward Dillinger steals game software (including "Space Paranoids") originally written by his brilliant young coworker Kevin Flynn. He claims it as his own in order to rise in the corporation’s ranks. When Flynn objects, Dillinger has Flynn fired - but not before Flynn is able to bury evidence of Dillinger’s crimes in digital memory. Soon after becoming CEO of ENCOM, Dillinger instructs the MCP to steal software from other corporate systems in order to further ENCOM’s power. Ignorant of Dillinger’s illegal activities, ENCOM programmer Alan Bradley begins writing a security program named Tron, which is designed to monitor traffic between the MCP and outside programs.
As the MCP grows in intelligence, it begins to rebel against the Users. In the virtual “System world”, it begins hunting down User-Believer programs, and either absorbs their programming into itself or condemns them to “deresolution” on the Game Grid (a virtual arena underlying the Tron arcade video games). It also feeds his System enforcer Sark extra power, making him strong enough to defeat anyone on the Game Grid. The MCP’s defiance of Users results in a resistance movement among the programs, led by a great warrior named Tron (who “fights for the Users”). Tron is eventually captured by Sark’s forces and forced to fight for his own survival on the Game Grid.
In the “real world”, Flynn searches for the lost evidence which would incriminate Dillinger. He uses his program Clu to try and hack into the MCP but is unsuccessful. In the System realm, Clu is captured and derezzed by the MCP. When the MCP warns Dillinger of Flynn’s efforts to penetrate the company's system, Dillinger shuts down all access to the System as a precaution. When this lock-down affects Alan’s work on the Tron security program, Bradley reports to Dillinger and informs him of his new program. News of this new independent monitoring program alarms the MCP, who has been planning to increase its illegal activities to include intrusions on government networks.
Meanwhile, in the bowels of ENCOM's research labs Walter Gibbs and his assistant Lora Baines perfect a method by which an object can be disintegrated, stored digitally, and then reassembled in another location. Afterwards, Lora and her lover (Alan Bradley) visit Flynn to warn him of Dillinger’s suspicions. They decide to help Flynn hack into the system by breaking into ENCOM’s lab at night so that he can gain local access to the MCP. As Flynn begins to break into ENCOM’s systems, the MCP uses Gibbs’ laser technology to disintegrate Flynn and reassemble him in the System realm.
Upon arrival, Flynn is captured by Sark’s guards and sent to the Game Grid training grounds. Eventually, Flynn befriends Tron and another program named Ram, and they break out of the Game Grid during a Light-Cycle match. After a Light-Tank attack they are separated in the Outlands (an area of sparsely-populated memory). Tron continues on towards the Input/Output Tower alone to try to contact his user Alan for further instructions. Ram eventually derezzes from his injuries but Flynn is able to use his User powers to reassemble and re-energize an abandoned Recognizer (hover carrier). He continues in his Recognizer towards the Input/Output Tower to rendezvous with Tron.
Tron arrives at the Factory Domain on his Light-Cycle and sees that its workers have become inarticulate “zombies” due to the energy-starvation policies of the MCP. After reuniting with his lover Yori, Tron reaches the Input/Output Tower and makes contact with his User, Alan-One. Alan gives Tron new code/instructions embedded into his Identity Disc which will give him the power to penetrate the MCP’s security protocols.After Flynn arrives at the Factory Domain he heads towards the Input/Output Tower in search of Tron. When Sark’s Elite Guard attack the Tower, Yori and Tron commandeer a Solar Sailer simulation, hoping to use it to cross the Game Sea in order to reach the Central Computer and the MCP. Flynn also manages to board the Solar Sailer just as it takes off. Sark pursues in his Command Carrier. When the MCP sends a power surge into the Solar Sailer’s beam path, Flynn uses his User power to realign the Sailer’s path onto a new network beam. However this gives Sark’s Carrier enough time to catch up and ram the Sailer.
During the collision Flynn and Yori are captured, but Tron evades Sark’s guards and hides on the Carrier. Sark leaves the Carrier in a shuttle in order to deliver the I/O Tower Guardian Dumont to the MCP to be absorbed. Tron secretly stows away on Sark’s shuttle in order to reach the MCP and destroy it. With Sark gone, the Carrier begins to de-rez, with Flynn and Yori still aboard and imprisoned. Flynn prevents Yori from de-rezzing with his User power and they escape their prison chamber. Flynn also uses his User power to hold the Carrier together long enough to fly over the MCP. After Sark delivers Dumont and some other Guardians to the MCP central cylinder, Tron emerges from hiding and destroys Sark in a duel. However, the MCP resurrects Sark as a giant zombie and it continues its attack on Tron. Flynn leaps from the Carrier into the MCP’s transmission beam. With the MCP distracted by Flynn's attack from within, Tron is able to use his Disc to destroy the MCPs core. After the MCP explodes, the System is re-energized by the release of stolen energy from the MCP. The explosion also causes Flynn to be reassembled in the real world. When he wakes up he is pleased to find that he has found the evidence needed to incriminate Dillinger. Flynn soon takes control of ENCOM.
TRON Betrayal
In the next few years, Flynn creates a new System and brings Tron over from the old System to act as the new one’s guardian. In the real world, Flynn marries a woman named Jordan. When Jordan becomes pregnant, Flynn feels that he cannot devote enough time to personally perfect his new System realm. To solve this problem, Flynn creates Clu, a virtual duplicate of himself who remains permanently in the virtual world, and continues working towards building the perfect system.
One day the System Grid spontaneously births a new sentient lifeform from the Sea of Simulation, the Isos. Unfortunately, destructive Gridbugs also begin appearing in the Iso sectors. Clu blames the Isos for causing this instability in the system and grows to hate them. Flynn tries to find time to help Clu address the additional system load caused by the Isos, but is drawn away by the needs of his pregnant wife and newborn baby.
After his wife Jordan unexpectedly dies, Flynn leaves ENCOM in order to take care of his son Sam. On the Grid, Clu becomes increasingly more ruthless towards other programs. His Black Guard begin planting bombs in the Iso districts. Clu eventually poisons the Sea of Simulation and places the blame on renegade terrorists.
TRON Evolution
An Iso named Jalen is derezzed on the Game Grid, inflaming tensions between the Isos and the programs of the Grid. Flynn creates a program named Anon to help Tron maintain the peace. In order to further help quell the unrest, a female Iso leader named Radia is nominated to be a Co-Systems Administrator alongside Clu. During the official ceremony a virus named Abraxas tries to attack the assemblage. Due to this mysterious danger, Tron suggests that Flynn return to the real world as a precaution. On the way to the portal, Clu’s forces openly attack them. Tron buys time for Flynn to escape, but is captured by Clu with the aid of Tron’s former ally Dyson. As Tron is being transported to Clu’s fortress, a sympathetic program named Cyrus frees him and they escape into the Outlands (as related in TRON Uprising). At the same time, a program named Gibson helps Flynn find refuge at the remote Bostrum Colony. With both Tron and Flynn missing or dead, Clu soon declares war on the Isos.
Anon and Quorra witness Clu’s betrayal and consult with the club owner Zuse, who is known to be sympathetic to the Isos. Zuse suggests they take the Solar Sailer to the Iso city of Arjia to inform Radia. As Anon and Quorra depart on the Sailer, Clu’s battleship, the Regulator, destroys Zuse’s club. Clu then immediately goes to Arjia, and tells Radia that Anon is responsible for Flynn’s death. He also orders her to gather the Isos together so that he can destroy the Abraxas virus more easily.In reality, their compliance will make it easier for him to destroy the Isos.
After Anon and Quorra arrive in Arjia they meet Radia and tell her that Clu has betrayed them all. Radia tasks Quorra with warning the other Iso enclaves of Clu's true intentions while Anon is tasked with locating Flynn. She tells him to look for a program named Gibson at the Game Grid, since he was spotted as the one who had helped Flynn escape the city after Clu’s attack. Using the Solar Sailer, Anon reaches the Game Grid and finds Gibson. After helping Gibson escape Clu’s forces they head to Bostrum Colony in a stolen Recognizer. At the Colony Flynn is nowhere to be found and all of the programs have become infected by Abraxas. Gibson is also eventually infected and Anon is forced to destroy him. He heads back to Arjia to consult with Radia again.
At Arjia, Anon learns from Quorra that Clu has attacked all the Iso enclaves in a massive Purge. They find Clu and Abraxas threatening Radia. Abraxas is revealed to be Jalen, corrupted into evil by Clu. After Abraxas derezzes Radia, Anon fights him as Clu bombs the city from above in the Regulator. Arjia is destroyed, but Flynn appears and helps Anon escape from the ruins of the city. After giving him an upgrade, he asks Anon to save Quorra, who has gone aboard the Regulator to confront Clu alone. Anon gets to the Regulator where he finds Quorra being threatened by Clu. The confrontation is interrupted when Abraxas rams the Regulator in a Recognizer. Anon engages Abraxas in battle, but just as Abraxas is destroyed the Regulator begins to self-destruct. As Clu flees, Anon saves Quorra from the sinking battleship but is killed in the crash. Flynn finds Quorra and takes her to safety.
TRON Uprising
In the Outlands, Tron realizes that the torture inflicted on him by Dyson has weakened him too much to effectively oppose Clu himself. He decides to train his protoge Cyrus into becoming a new Tron. Unfortunately Cyrus goes insane and Tron is forced to imprison him in an energy pool.
Later, one of Clu’s followers, General Tesler, arrives in Argon City and institutes martial rule. After a mechanic named Bodhi is derezzed by Tesler’s forces, his outraged friend Beck decides to fight back as “the Renegade”. Tron soon tracks Beck down and begins to train him as yet another Tron figure.
After a solo campaign of resistance against Tesler’s forces, Beck is finally able to inspire the programs of Argon City to resist Tesler’s occupation army. Unfortunately, Clu soon arrives with an even greater army. Although not dramatized on screen, Clu presumably crushes the rebellion, in the process capturing Tron and turning him into a twisted version of himself named Rinzler. Rinzler becomes Clu’s most loyal warrior. Beck and his friends disappear from the scene.
TRON Legacy
With the System entirely under his control, Clu soon wishes to extend his control over into the real world. However, he has no way of crossing over, since the Portal has been closed for some time (since Flynn’s disappearance). He nonetheless manages to send a digital page to Alan Bradley in the real world, hoping to get a reaction of some sort. Alan informs Flynn’s son Sam of the page. At Flynn’s old arcade, Sam finds his father’s secret lab and crosses over to the System. Just like his father before him, Sam is immediately chosen to play on the Game Grid, and Clu challenges him to a Light-Cycle death-match. Monitoring Clu’s activities, Quorra spots Sam on the Game Grid and rescues him from Clu, just as Clu had hoped she would. Clu's ultimate plan is to flush Flynn out of hiding so that he can obtain Flynn’s Identity Disc and use it to create a bridge to the real world. 
Quorra brings Sam to his father’s secret base in the Outlands. After reuniting with his son, Flynn guesses Clu’s plan and decides not to take the bait - he advises inaction. Sam refuses to remain trapped in the System and heads back to the City, hoping to reach the Portal and then to shut Clu down from the real world. On Quorra’s recommendation, Sam locates the club-owner Zuse, who offers to help Sam reach the Portal. Unfortunately, Zuse is now in league with Clu and alerts Clu that Sam is in his club. Clu’s guards attack, but Quorra and Flynn arrive and come to his aid. Quorra is injured but Flynn and Sam manage to carry her to safety on a stolen Solar Sailer. Unfortunately the craft takes them to Clu’s military base instead of the Portal. They eventually steal one of Clu’s military Light-Jets and fly towards the Portal with Clu and Rinzler in aerial pursuit. Just as Clu is about to destroy Flynn’s Light-Jet, Rinzler remembers who he is (Tron) and turns against Clu. Clu survives Tron’s attack and manages to beat the heroes to the Portal. Confronted by Clu at the Portal entrance, Sam and Quorra use Flynn’s Disc to escape to the real world, as Flynn re-absorbs Clu into himself, destroying them both.
TRON Wiki
