Dominion

Summary
Because Adria is able to sense deception within others, using Vala's own plan, SG-1 implants false memories into Vala of her escaping an SGC that has turned against her. Because Vala believes that is all real, Adria does not realize that it is faked. When Vala leads her in search of the Clava Thessara Infinatus, SG-1 ambushes them with anti-Prior devices to stop Adria from using her powers. However, Ba'al's Jaffa beam in and kidnap Adria.

Ba'al reveals that he is going to take control of her armies and implants her with a symbiote. SG-1 rescues her (killing a Ba'al clone), but realize that Ba'al has already taken control of her. He attempts to buy time to overcome the anti-Prior device, offering the information that the Ori are truly dead. When SG-1 informs him that they plan to swap him with a Tok'ra symbiote, he threatens to kill her rather than allow them to succeed.

When the Tok'ra try to remove Ba'al, he releases a neurotoxin into her bloodstream, leaving Adria on her deathbed, too weak to be blended with the Tok'ra symbiote. They try to kill her while she is unconscious, but she wakes up and throws Daniel and the guards across the room.

Knowing that she is dying, Adria seals herself in the infirmary with Vala. Using her Ori telekinetic powers to hold the doors closed, she begins preparations for ascension. Mitchell and Teal'c attempt to cut their way in, but are distracted when Adria releases coolant into the corridor where Daniel is trapped. Vala attempts to kill Adria with one of the guard's guns, but is lifted into the air by Adria's telekinetic powers, allowing her to complete the ascension process uninterrupted.

SG-1 is left speculating whether the Ori are dead as Ba'al said, thereby leaving all their former power to Adria, or whether Adria has joined them in their crusade. Vala however points out that, whether or not the Ori are still alive, they have dealt a heavy blow to the invading armies by depriving them of their leader.