Endgame

Summary
When the Stargate disappears from the gate room in the SGC, Col. Samantha Carter and Dr. Daniel Jackson investigate while Teal'c is on an offworld mission to negotiate with rebel Jaffa.

Having received a "Do Not Proceed" response to his I.D.C., Teal'c travels to the Alpha site, where he discovers they can't contact Earth either. Teal'c decides to return to P4S-161 to get a Jaffa cargo ship to travel back to Earth. But when he arrives, he finds an entire Jaffa army lying dead without a mark on their bodies.

Daniel and Carter trace the adapted Asgard beams to a warehouse and make a shocking discovery. The warehouse contains missiles and a nerve gas. When investigating the warehouse they are attacked by a member of the Trust and a number of the nerve gas capsules are smashed. Daniel and Carter believe death to be only a matter of seconds away and are shocked when they remain fine.

At the Alpha site, Teal'c and other Jaffa are outraged by the attack and believe it must be the work of the Tok'ra using the anti-Goa'uld toxin. Col. Pierce points out that the start of attacks coincided with the Earth's Stargate going offline. Teal'c and rebel Jaffa M'zel decide to seek out a nearby Tok'ra on a deep cover mission to find out what is going on.

Their attacker in the warehouse won't talk but he was carrying an Area 51 ID card. Daniel and Carter go to investigate and find the captured Gou'ld/Asgard beaming gauntlet present and in working order. The Scientist investigating it insists that they had never been able to make it work and that it had not been removed from the site.

The scientist from Area 51 meets with a member of the Trust and expresses his disquiet at what he had been made to do. Carter, Daniel and an armed response team arrive and give chase on foot to the man. Carter manages to shoot the Trust agent with a Zat and when investigating his pockets she accidentally activates the Asgard beaming device and finds herself as well as the trust agent beamed aboard a cloaked Goa'uld vessel in lunar orbit. She is instantly stunned by a Trust member bearing a Zat.

Teal'c and M'zel allows themselves to be captured in order to meet with Zarin, the Tok'ra posing as the head of the Jaffa garrison. They're taken before her and she expresses her anger as they risking exposing her.

Daniel interrogates the scientist and he only breaks when Daniel informs him that the SGC will allow him to keep the two millions of dollars the Trust have paid into his Cayman Island account. The scientist reveals that the Goa'uld device worked and that he had transported to the vessel in orbit. The Trust now have several devices that allow them to transport to the vessel. He agrees to fix the original device for Daniel.

Carter awakes to find the Trust preparing to fire a nerve gas missile at another planet. She argues with them about the morality of their actions stating that millions of innocent Jaffa will die. The Trust do not accept her argument and press on with their attack.

While arguing with the Tok'ra about the attacks, a rocket engine can be hear in the background. Teal'c immediately realizes that they are under attack from the anti-Goa'uld weapon but he is prevented from leaving... and then suddenly is the only one left alive on the planet.

Daniel prepares to beam up to the vessel and has an argument with General O'Neill about his plan. O'Neill considers the idea insane and Daniel wonders out loud where who learned to consider insane plans from. The Prometheus begins to search for the Goa'uld vessel.

Carter continues to argue with the Trust about the morality of their actions but they refuse to listen to her. They ask her to offer up 'harder' targets for them to hit if she is so concerned about innocents being killed. She refuses.

Daniel disables the cloak on the vessel and the Prometheus closes in. The Trust see that their cloak has failed and they head off to try to fix it or go into hyperspace. Daniel sneaks around the ship to try and shut down the hyperdrive. He is zatted and captured.

The Prometheus closes in and requests orders from General O'Neill. They have had no signal from Daniel and believe the hyperdrive is still working. They request orders to attack.

O'Neill is torn and does not want to order an attack on a vessel containing SG-1.

The Trust prepare to hyperdrive away from Earth. They turn on Daniel and Carter and prepare to kill them. Suddenly the Stargate starts to dial in and when the wormhole bursts out Carter and Daniel take advantage of the situation to attack.

While fighting the Trust, Daniel and Carter hear Teal'c radio through for clearance. They scream at him to come through and he does just in time, killing a Trust agent who had them in his sights.

SG1 signal the Prometheus to beam them and the Stargate out. They make it just as the Trust go into Hyperspace.

The Stargate is returned to its rightful position and devices are placed around it to prevent it from being beamed out again. O'Neill does not seem happy with having to make big decisions.