ABC aired a new promo for its upcoming sci-fi series Flash Forward during last night's season finale of Lost, and you can watch it after the jump.

The show, based on Robert J. Sawyer's novel, deals with what happens when everyone on Earth briefly falls unconscious at the same time for 2 minutes and 17 seconds. During those moments, people see what happens to their lives six months in the future.

David Goyer and Brannon Braga (Threshold) wrote the pilot, which Goyer also directed. Goyer, Braga, Vince Gerardis, Jessika Goyer, Marc Guggenheim and Ralph Vicinanza are executive producers; Guggenheim and Goyer will serve as show runners.

The show stars Joseph Fiennes, Courtney B. Vance, Jack Davenport, Sonya Walger, John Cho, Brian O'Byrne, Zachary Knighton, Peyton List and Christine Woods. It's expected to debut in the fall.