The Stargate becomes an instrument of destruction when the SGC is attacked by Anubis, who is able to turn one Stargate against another.
The SG-1 search for Anubus and prepares itself for a battle with him. Meanwhile, at his wife's funeral, Teal'c is confronted by his son, who believes Teal'c's involvement with the SG-1 caused the death of his mother.
The team is trapped beneath the ocean when they investigate a sunken mothership.
The team revives a woman frozen beneath the ice in the Antarctic who carries a disease that spreads to the team.
Carter, Teal'c. amd Jonas' investigation into the death of a scientist leads them to the discovery of a town whose inhabitants are behaving strangely, a symptom of a secret experiment to clone Gou'alds.
With total amnesia regarding how he got there, O'Nell winds up the prisoner of a system lord.
Jonas attempts to avoid the threat of war on his home planet by bringing with him the SG-1 team.
When the Goa'uld take over SG-1, the crew's survival depends on two unlikely heroes.
The Tok'ra and their Jaffa allies nearly turn on each other, spurred by the deadly, disruptive actions of an invisible assassin.
A new alien race wants to exchange a miracle cure for the gate access but its its the panacea its cracked up to beand comes with a high cost.
When a reporter threatens to expose the existence of the Prometheus mother ship, SG-1 agrees to give them a tour. The news crew turn out to be hostiles and take over the ship sending the ship into hyperdrive. When the SG-1 crew takes back the ship they realize they are lost in space.
Thor enlists the SG-1 to thwart robots attempting to destroy everything in their path.
An ancient artifact emits a contagious energy field which causes people to see visions of terrible creatures.
When a political leader is assassinated, O'Neill becomes the prime suspect with undeniable evidence against him.
O'Neill is led to a planet where the goal of an alien utopia has gone awry.
After learning of a plan to create the perfect human being, SG-1, along with the Russian SG team, travel to another planet and find laboratory-bred telekinetic mutants.
The U.S. and Russia reveal the existence of the Stargate to the ambassadors of the U.K., France, and China during a hushed Pentagon meeting.
While on a planet, the SG-1 crew encounter a human colony and an alien race whose ships both claim are prison transports. One group, however, is lying, and plans to use the Stargate to pirate the riches of other planets.
Teal'c undergoes an experimental procedure that could eliminate the need for a symbiote.
The SG-1 crew finds itself stranded in deep space when the Prometheus' hyperdrive fails during a test flight.
Jonas comes to learn that he has precognitive abilities as the result of experiments performed on him by the Nirrti.
The SG-1 team moves fast in order to stop Anubis from obtaining a powerful necklace.