History may never repeat itself again.
Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.
Ben Browder
Colonel Cameron Mitchell
Amanda Tapping
Colonel Samantha Carter
Christopher Judge
Teal'c
Michael Shanks
Dr. Daniel Jackson
Claudia Black
Vala Mal Doran
Beau Bridges
Major General Hank Landry
Richard Dean Anderson
Major General Jack O'Neill
Cliff Simon
Ba'al
Don S. Davis
Lieutenant General George Hammond
William Devane
President Henry Hayes
Steve Bacic
Camulus
Gary Jones
Chief Mst Sgt. Walter Harriman
