Brad Wright
Summary
SG-1 searches for an ancient weapon which could help them defeat the Ori, and discover it may be in the Ori's own home galaxy. As the Ori prepare to send ships through to the Milky Way to attack Earth, on board the Odyssey, SG-1 travels to the Ori galaxy. The International Oversight Committee has their own plans and SG-1 finds themselves in a distant galaxy fighting two powerful enemies.
Summary
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,...