For twenty years, Sam Flynn (Garrett Hedlund) has been haunted by the mysterious disappearance of his father Kevin (Jeff Bridges), an innovative software programmer and former CEO of ENCOM International. One night, an executive consultant for ENCOM and friend of Kevin, Alan Bradley (Bruce Boxleitner), sends Sam to investigate a mysterious page originating from the long abandoned Flynn's Arcade. While searching for clues, Sam is suddenly transported to the digital world of The Grid. Aided by the digital warrior Quorra (Olivia Wilde) and Tron (Bruce Boxleitner), Sam is reunited with his father and together set out on a journey to return home. Encountering vehicles, weapons, and landscapes that have become far more advanced than before, father and son must evade CLU 2, an updated version of Flynn's original hacking program, which will stop at nothing to prevent their escape.