A tour of an off-world research base for a group of foreign diplomats turns dangerous when an insidious insect species gets loose.

Mitchell and Carter are shifted to another dimension, making them invisible to everyone at the S.G.C. Meanwhile, Teal’c and SG-9 discover that the Sodan have been brutally attacked.

Vala Mal Doran makes contact with Stargate Command from the Ori home galaxy, and tells the story of her life undercover in a village of followers building the Ori’s invasion…

SG-1 discovers the village of Camelot on an alien world, and must face Merlin’s security system when they go in search of an Ancient weapon. Elsewhere, Earth and its allies…

An Ancient communications device renders Daniel and Vala unconscious, sending their minds to another galaxy — where they inhabit the bodies of two people persecuted by the followers of an…

Daniel comes face to face with the Ori, a fiery race of beings who demand the worship of mortals. Elsewhere, Stargate Command encounters the first Ori missionary in our galaxy.

Jackson and Mitchell must join Vala on an interplanetary scavenger hunt when they learn that they are still bound together by an alien energy field.

SG-1 visits a world whose people once worshipped Vala as a god — and demand that she stand trial when she confesses to manipulating them.

Samantha Carter returns to Stargate Command when the Ori seize control of a planet, using an expanding force field to gain a foothold in our galaxy.

SG-1 investigates when evidence suggests that there are still Goa’uld hiding on Earth — including a former System Lord. Tensions between Earth and the Free Jaffa continue to mount.

Colonel Mitchell is injured in a skirmish with a warrior from a mythic tribe of rebel Jaffa, and is trained in their fighting techniques only so that he may engage…

SG-1 finds a genetically advanced Goa’uld-human hybrid created by Anubis, and returns him to Earth for study. But even keeping him alive may not be worth the risk.

Earth is infected with a deadly Ori plague, prompting an ally from SG-1’s past to come to their aide. Gerak proposes that the Free Jaffa follow the Ori religion.

As the Ori plague spreads rapidly, SG-1 hopes that the Prior who caused the disease may hold the key to its cure. Gerak tries to rally the Jaffa to the…

When SG-1 travels to an Asgard Protected Planet, Colonel Mitchell is accused of a murder he did not commit.

Multiple SG-1s show up at Stargate Command, leading the “real” team to conclude that they have each been inadvertantly displaced from different parallel realities.

Baal kidnaps Teal’c as part of a plot to brainwash those Jaffa advocating a move toward democracy. Cameron Mitchell learns that an old friend is about to die.

An Air Force pilot attempts to reassemble SG-1 after they have gone their separate ways. An old “friend” arrives on Earth asking for Daniel’s help in finding an ancient treasure…

While Daniel finds himself in a mysterious diner suspended between death and ascension, Jacob’s fate takes an unexpected turn, Jack and Sam consider their romantic lives, and Anubis unleashes his…

SG-1 travels back in time in a daring plan to steal a piece of Ancient technology from Ra, the powerful Goa’uld who ruled in ancient Egypt.

With the timeline changed by SG-1’s actions in the distant past, an alternate version of SG-1 must use the newly-discovered time ship to set things right.

Teal’c is trapped in a virtual reality simulation, in which he must defend the base from a Goa’uld super-soldier incursion.

Teal’c becomes the chief suspect in a murder investigation after he moves into an apartment off-base. Carter considers her future with Pete.

A businessman threatens to expose the secrets of alien life to the world, forcing Stargate Command to bring him into the loop.

The impending wedding of his son is the least of Teal’c’s worries when the Hak’tyl plan an uprising against the Goa’uld Moloc, driving a wedge between Teal’c and Ishta.

The Stargate is stolen, leading SG-1 to discover that the Trust has taken control of an advanced ship in orbit. Teal’c investigates a series of wide-spread Jaffa deaths.

A duplicate of Colonel Carter seeks help from Stargate Command in defeating the Replicator Fifth, who she claims has found a way to counter the Asgard’s new weapon.

After the Prometheus responds to a distress call from a Goa’uld ship, Daniel Jackson finds himself a captive when Earth’s ship is stolen.

SG-1 comes to the aid of a world about to be invaded by the Goa’uld, only to discover that the local king is Earth’s Harry Maybourne.

Relations between the U.S. and Russia are strained when Russian military leaders claim that the U.S. government has been compromised by the Goa’uld.

Jack is confronted in his home by an irate barber…who claims to know everything about the Stargate project and SG-1.

The Replicators begin a systematic attack of the Goa’uld, forcing Baal to come to Earth for help. The Jaffa Resistance risk their entire movement in an attempt to retake a…

The fate of the galaxy hangs in the balance as Sam and Jacob search for the only weapon capable of stopping the Replicator onslaught. O’Neill leads a defense of the…

Carter and Teal’c go in search of the Asgard to try and save Colonel O’Neill, but discover that the Asgard’s enemy has returned with a vengeance. The System Lords seek…

While the Goa’uld threaten to attack Earth, SG-1 and the Asgard make a last, desperate stand against the Replicators, which have captured Major Carter and invaded the last outpost of…

The S.G.C. is put under quarantine after a mysterious infection leaves a Russian officer in the infirmary — but the disease may not be a disease at all.

General O’Neill tries to settle into his new job, but faces never-ending crises – including the capture of SG-1 by the Goa’uld.

Daniel is stranded on another planet after the team’s arrival on an alien world sparks a violent civil war.

O’Neill goes to great lengths to keep the Ancients’ knowledge from falling into Goa’uld hands when the team discovers a second repository. The President replaces General Hammond with a civilian…

Anubis begins a systematic assault on Earth, and the planet’s only hope of salvation depends on whether SG-1 can find the Ancients’ mythical Lost City.