An elite military unit (SG-1) must flee back to Earth when two members of their team inexplicably disappear into thin air. But they return to a world in which the Stargate--an ancient device which allows them to travel to hundreds of planets--was never discovered, and their own history has been erased. Now they must convince a dubious government and military that the timeline was altered by a powerful alien enemy (Ba'al) in order to conquer Earth, and time is not on their side.

Special features: Audio commentary with executive producer/writer Brad Wright and director Martin Wood; "The making of Stargate Continuum" featurette; "Stargate goes to the Arctic" featurette; "The layman's guide to time travel" featurette.

Special features: Widescreen version -- Audio commentary with executive producer/writer Brad wright and director Martin Wood -- "The making of Stargate continuum" featurette -- "Stargate goes to the Arctic" featurette -- "The layman's guide to time travel" featurette -- Language: English 5.1 Dolby surround ; French Dolby surround ; Spanish Dolby surround -- Subtitles: English, Spanish.