Part 1 of 2. Tron's history before the occupation is revealed. Meanwhile, Beck tries to convince Tron to stop his planned revenge against a program named Dyson that was once his friend.

Cast: Mandy Moore, Elijah Wood, Emmanuelle Chriqui, Lance Henriksen, Nate Corddry, Paul Reubens, Fred Tatasciore, Reginald VelJohnson, Tricia Helfer, Bruce Boxleitner