Ben Browder, Amanda Tapping. Taking its lead from the hit series Stargate SG-1, the Stargate team tries to save mankind from the impending Ori attack by finding the ancient artifact that can defeat them in The Ark of Truth (97 min.). In Continuum (99 min.), the SG-1 team races back to Earth only to discover that an alien has altered the timeline and Stargate hasn’t even been invented yet! 2 Discs.