SG-1 travels to planet with the gate address found in the episode “Arthur’s Mantle” to find the Anti-Ori weapon. There they discover a pre-industrial village. In the Camelot town square, as the town is known by on the planet, they find a sword in a stone. Upon talking to the villagers, they learn that Merlin had a library or sanctuary in the town, too. The problem is the curse on the library. Anyone entering the library winds up dead at the hands of the Black Knight defense mechanism. Mitchell will have to fight another Knight in order for them to gain entrance.
The search for the weapon is interrupted by news that a new Ori super gate has been detected. The teams split in to two’s with Jackson and Mitchell returning to search for the weapon, and Carter and Teal’c joining the Odyssey
, which is on its way with all the ships that can be mustered, to try to destroy it.
Can the super gate be destroyed in time? If not, can Merlin’s weapon be found in time, if the Ori do make it through the super gate before it is destroyed?