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 ...
The year is 2509 and not only has Earth lost contact with the Ishimura and Isaac Clarke, but now also the USG O'Bannon, the first responder ship sent to rescue them. Four crew members ...
