The movie Tron: The Next Day explores the events between Tron (1982) and Tron: Legacy (2010),revealing the "Flynn Lives" viral campaign and the massive movement that followed Kevin Flynn's mysterious disappearance in 1989.
Tron: The Next Day
The theory suggests that J.M. Barrie, creator of Peter Pan, did not intend to kill off the boy who never grew up, but rather cleverly hid clues hinting at his survival.