Kevin Flynn, a talented computer programmer, discovers that the software he created has been stolen by his former employer, the massive corporation ENCOM. Desperate to find proof of the theft, Flynn attempts to hack into ENCOM's computer system but is abruptly digitized and transported into the digital world by the Master Control Program (MCP), a malevolent AI that runs the virtual environment. Inside this neon-lit, grid-like universe, Flynn discovers programs resembling humans, including TRON, a security program and warrior created by ENCOM employee Alan Bradley. Together, they embark on a mission to confront the MCP and liberate the system from its control.

In this digital realm, Flynn and TRON must navigate through various obstacles and face antagonistic programs loyal to the MCP. Their journey is fraught with peril as they utilize advanced weaponry and combat skills to survive. Flynn's knowledge as a programmer becomes a crucial asset, enabling him to manipulate the digital environment to their advantage. The stakes are high as they race against time to prevent the MCP from extending its dominion across both the digital and real worlds. The film explores themes of technology, freedom, and the fight against oppressive control within a visually striking and innovative landscape.