We're one month away from the theatrical release of TRON: Ares, and Disney is seeking to stoke interest with a new trailer that shows the titular program going back to the original 1984 grid—and encountering an unexpected figure: the one and only Kevin Flynn (Jeff Bridges).
(Some spoilers for Tron and Tron: Legacy below.)
As previously reported, TRON: Legacy ended with Sam Flynn (Garrett Hedlund), son of Kevin Flynn, preventing the digital world from bleeding into the real world, as planned by the Grid's malevolent ruling program, Clu. He brought with him Quorra (Olivia Wilde), a naturally occurring isomorphic algorithm targeted for extinction by Clu.