During their Quest for the Sangraal SG-1 must join forces with their enemy and face a real-life dragon.

Cameron Mitchell must go undercover inside the Lucian Alliance to find the location of the hijacked Odyssey.

Vala is kidnapped by agents of the Trust who are trying to find an ancient treasure when an accident causes Vala to forget who she is.

SG-1 is caught in the middle of a war after the Jaffa use a powerful weapon to kill 10,000 Ori followers.

Martin Lloyd seeks out SG-1 for assistance when his failed TV show based on the real Stargate program becomes a feature film.

An invisible creature targets members of Stargate Command one by one.

The SGC-base is approached by an al-kesh glider which lets itself be taken down, so they can capture Ba\’al, who offers to exchange the necessary information to find Merlin\’s weapon for human help to

While Daniel and Vala search for Merlin\’s anti-Ori weapon in Atlantis\’ library, Mitchell, McKay and Carter try to to dial the Ori Supergate in the Milky Way.

The team goes off-world and ends up in serious trouble. Meanwhile, Landry is faced with having to decide whether or not Vala can be trusted to remain at the SGC.

As the Ori invasion continues, Vala and Daniel must deal with their leader, Vala\’s young daughter, who is rapidly aged by the Ori to serve their purposes.