As Colonel Jack O'Neill and his team journey to Abydos to confront deadly warriors and laser-firing Death Gliders, O'Neill realizes that this new mission seems hauntingly familiar and that an old enemy has returned to take his revenge on Earth.

In this suspenseful tale of "survival of the fittest", O'Neill (Richard Dean Anderson) and the SG-1 team must attempt to remove a Goa'uld larva that has infected Kawalsky's (guest star Jay Acovone) brain … but time is running out!

On the planet Simarka, where the fierce race of Shavadai mistreat females, Capt. Samantha Carter (Amanda Tapping) challenges their ways in a thrilling battle of wits that may bring women equity or forever keep them as second-class citizens.

Returning from a planet with both a civilized and primitive side, all but two of the team become infected and spread a brutal virus. Will Teal'c and Jackson find the cause, or are their colleagues doomed to become Stone Age primitives?

The SG-1 team is sent after the SG-9 team that has failed to return. They find that the team's captain (William Russ), having been treated like a god by planetary inhabitants, is drunk with power and is tyrannizing them. Can they overcome him?

A strange crystal strikes down O'Neill, replacing him with a double that returns with the team to Earth to find the cause of O'Neill's private grief...his son's death. But the double is dangerously unstable. Can O'Neill return home to save everyone?

When a planned ambush goes disastrously wrong, resulting in fatalities among the SG-1 team, the peace-loving Nox restore them to life. But while these gentle people can bring back the dead, can they resist the deadly technology of the Goa'uld?

On the mysterious planet Argos, the beautiful Kynthia seduces Colonel Jack O'Neill, which means he's condemned to an Argosian lifespan of only a hundred days. As he turns gray, will his team succeed in their frantic search for a cure?

Looking for allies against the Goa'uld, the SG-1 team lands on Cimmeria, home of the legendary Norse gods. Teal'c and O'Neill are transported to an underground labyrinth of caves of the vicious creature Unas. Can Carter & Daniel rescue them?

Dr. Daniel Jackson discovers that in 1945, a young professor slipped through the Stargate, never to return. Together with his still living fiancée, the SG-1 team discovers the now aged professor trapped in a decaying fortress.

With the proviso that he bring back a Goa'uld larva for study, Teal'c (Christopher Judge) returns to Chulak to stop the Goa'uld from enslaving his son Rya'c. Trouble is, Rya'c needs a larva to survive - and the only one available is Teal'c's.

The SG-1 team returns from the planet Oannes in a panic and minus Daniel Jackson, who was last seen being consumed by a column of flames. But as his comrades mourn him on Earth, Daniel is the captive of an amphibious humanoid creature known as Nem.

The evil Goa'uld Hathor (Suanne Braun) escapes from a Mayan pyramid in Mexico. At the Stargate facility, she uses her charms to seduce the men into helping her take over the world. Can Samantha Carter and her female colleagues defeat her?

Capt. Carter returns with the sole survivor of a planetary plague - a little girl, Cassandra. As they become attached, Carter discovers the girl's terrible secret - a time bomb implanted by the Goa'uld. Can she save the girl - and the world?

Colonel Jack O'Neill and the team travel to Chartago, where Teal'c is recognized as once having been head Jaffa to the sinister Goa'uld Apothis. He's arrested for murder and put on trial for his life. Can his comrades save him?

The SG-1 team rescues a group of highly developed survivors from the cataclysmic planet of Tollan. To stop the legendary knowledge of the Tollan people from falling into the wrong hands, O'Neill and his team stake all on the cross-universal rescue.

Following a Stargate technical defect, O'Neill and Carter find themselves stranded on an icy wasteland. O'Neill is severely wounded, both are freezing to death, and nobody can find the section of the universe in which they are stranded!

Upon landing on Planet PX3 989, the mysterious alien Harlan renders the SG-1 team unconscious. After waking and returning to Earth, they find that their spirits and minds have been transferred to androids. Can the team regain their bodies and souls?

A mysterious mirror transports Dr. Daniel Jackson (Michael Shanks) to another dimension. Suddenly he finds himself on an alternate Earth that is under attack from the Goa'uld. Can he return to his dimension and save the world?

Only Daniel Jackson (Michael Shanks) knows of the Goa'uld plans to invade Earth. But no one takes his warnings seriously. In fact, this time the authorities have chosen to terminate the costly Stargate program and close the gate forever.

To stop the Goa'uld invasion, the SG-1 team disobeys orders and transports itself to the Goa'uld attack headquarters. Landing amidst preparations for an all-out strike on Earth, the way home is blocked. Can the team avert disaster and save humanity?