Stargate The Ark of Truth
Story
The Lines have been drawn.
The Battle has been waged.
Only One Thing can save us...
As SG-1 searches for an Ancient artifact which they hope can defeat the armies of the Ori, they learn more Ori ships are about to be sent through the supergate to launch a final assault on Earth.
Daniel discovers that the artifact, the Ark of Truth, may be in the Ori home galaxy, and SG-1 embarks aboard the Odyssey to find it, and pre-empt the attack.
The IOA has a plan of their own and SG-1 ends up in a distant galaxy fighting two powerful enemies.