The Jaffa take the fight to the Ori, using a genocidal weapon on their new worshipers and landing SG-1 in the middle of a war they can’t control.

Martin Lloyd seeks out SG-1 for assistance when his failed TV show based on the real Stargate program becomes a feature film.

Teal’c discovers a world where people are being savagely attacked by an elusive creature, leading SG-1 to a stunning discovery about its potential origin.

When Baal comes to Earth seeking help, Stargate Command must capture his clones and determine which one is the genuine article.

Daniel and Vala travel to Atlantis in search of Merlin’s anti-Ori weapon, while Sam, and Mitchell join forces with Dr. McKay to lock out the Ori supergate.

SG-1 investigates a problem off-world and soon finds that they have become victims themselves: they cannot stay awake. Meanwhile, Vala Mal Doran undergoes an evaluation on Earth, hoping to join SG-1.

As the Ori invade the Jaffa planet Chulak, Vala and Daniel must deal with their leader: Vala’s young daughter, rapidly aged by the Ori to serve their purposes.

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 assemble a fleet when a working Ori Supergate is discovered.

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 fleet.

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.

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

SG-1 is captured after a deal with the Lucian Alliance goes bad … and the planet’s Stargate goes missing. Meanwhile, a former System Lord attempts to rebuild his empire.

Daniel is imprisoned on a world under the influence of the Ori, and the Prometheus is caught in a firefight when SG-1 tries to rescue him.

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.

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.

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

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 Ori’s cause, prompting Teal’c and Bra’tac to initiate a resistance.

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.

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.

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 in a ritual battle to the death.

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.

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

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.

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.

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 evil religion.

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 — and she won’t take no for an answer.

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.

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.

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 plan for galactic destruction.

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 S.G.C., while Daniel squares off against Replicator Carter.

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 holy city in Baal’s domain.

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

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.

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.

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.

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.

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.

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.

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