SG-1 attempts to rescue an Asgard scientist from the Goa'uld.

SG-1 returns from a planet with Daniel apparently dying from radiation poisoning.

SG-1 finds a world under siege by Lord Svarog's forces because the "Shades of Grey" NID team disabled the planet's defenses. SG-1 must work with the captured team members to restore them.

SG-1 explores a planet and finds an inactive android, which when activated thinks it is a normal human girl.

A charismatic new Jaffa leader seeks an alliance with the SGC and Earth.

Earth finds itself threatened when SG Command learns that an asteroid is on a collision course with the planet.

Osiris is actually an emissary of Anubis and she petitions the System Lords to re-admit him. Meanwhile, Daniel in the guise of Lord Yu's servant tries to save Sarah while Jacob waits cloaked nearby.

When the System Lords call a summit to deal with a new threat against them, the Tok'ra and Daniel infiltrate the conference and plan to use a poison to wipe them out, but matters get complicated when Osiris, still in the body of Dr. Sarah Gardner, arrives.

A Stargate mishap leaves Teal'c trapped inside the Stargate network, forcing the SGC to turn to the Russians for help.

The SGC embarks on a cadet training program.

A space ship is approaching Earth and SGC knows it belongs to the aliens they met in the episode "Point of No Return." Martin, one of the aliens, wrote a television script to Hollywood about the SGC, and O'Neill has to join the filming crew to get closer to Martin and try to find more about the ship.

When Carter goes missing, O'Neill teams up with Col. Maybourne again to free her from her unknown captors.

On an agrarian planet, SG-1 meets the Ashen Confederacy, who propose a trade accord with Earth.

Narim alerts SG-1 to possible dangers following the suspicious death of Omoc.

SG-1 teams up with the Russians to find one of the latter's missing teams, which were lost in a ziggurat on an alien planet.

When Daniel's friend Chaka is abducted by slave traders, SG-1 goes through the stargate to rescue him. However when the opportunity to free him comes, Chaka refuses to leave, and Daniel discovers Chaka has become the leader of the other Unas slaves.

Cassandra develops telekinetic powers which threatens to kill her. While seeking a cure, Dr. Fraiser uncovers a dark secret on Cassie's home planet.

After a particularly rough ride through the Stargate, SG-1 arrives on a planet where the sky and the sun suddenly change to an orange-red color. The villagers immediately think it's Ragnarok, but SG-1 soon discovers it's a catastrophe of their own making.

O'Neill is stranded behind enemy lines fighting an unknown Goa'uld army. Teal'c, Carter, and Daniel return to the SGC but are faced with difficult questions from General Hammond when they report that a mysterious fifth member of SG-1 is trapped on the planet with Jack.

Carter finds romance from an alien who secretly followed her back from his planet.

Bra'tac must perform a Jaffa ritual bringing Teal'c to the brink of death to restore his true self.

SG-1 and Jacob Carter are trapped in another galaxy with Apophis, while Teal'c is brainwashed into believing that his defection from Apophis was all a ruse.