Ben Browder, Michael Shanks, Amanda Tapping, Christopher Judge, Claudia Black, Beau Bridges, Cliff Simon, Jacqueline Samuda, Richard Dean Anderson
While SG-1 attends the execution of Ba?al, the last of the Goa?uld System Lords, Teal?c and Vala inexplicably disappear into thin air. Carter, Daniel and Mitchell race back to a world where history has been changed: the Stargate program has been erased from the timeline. The remaining SG-1 members must find the Stargate and set things right before they world is enslaved by the Goa?uld.