A secret military team, SG-1, is formed to explore the recently discovered Stargates.
Amanda Tapping / Christopher Judge / Michael Shanks / Richard Dean Anderson / Don S. Davis / Gary Jones
During a failed experiment, Samantha is transported into a parallel universe where she cloaks Earth to save it from an Ori Attack. Getting back to her own universe is not met with sympathy.
During their Quest for the Sangraal SG-1 must join forces with their enemy and face a real-life dragon.
Cameron Mitchell must go undercover inside the Lucian Alliance to find the location of the hijacked Odyssey.
Vala is kidnapped by agents of the Trust who are trying to find an ancient treasure when an accident causes Vala to forget who she is.
SG-1 is caught in the middle of a war after the Jaffa use a powerful weapon to kill 10,000 Ori followers.
Martin Lloyd seeks out SG-1 for assistance when his failed TV show based on the real Stargate program becomes a feature film.
A mysterious creature targets members of Stargate Command one by one.
While Daniel and Vala search for Merlin's anti-Ori weapon in Atlantis' library, Mitchell, McKay and Carter try to to dial the Ori Supergate in the Milky Way.
The team goes off-world and ends up in serious trouble. Meanwhile, Landry is faced with having to decide whether or not Vala can be trusted to remain at the SGC.
As the Ori invasion continues, Vala and Daniel must deal with their leader, Vala's young daughter, who is rapidly aged by the Ori to serve their purposes.
While investigating the source of an addictive corn-like crop, SG-1 becomes involved in a firefight. They are forced to fall back to the gate, but as Daniel is dialing both the Stargate and the DHD are beamed away.
On another planet, Mitchell is placed under arrest for the murder of a scientist.
Upon finding Merlin's testing grounds, Dr. Jackson, Teal'c, Col. Mitchell, and Vala uncover the hidden treasure including a book that tells the story of the Ancients coming to Earth from another galaxy and a strange alien device.
Sam and Jacob are on the planet Dakara trying to configure the Ancient's device to destroy the replicators once and for all, helped partly by Baal and Daniel who succeeds in freezing the replicators by manipulating Carter's duplicate.
A man breaks into Jack's house and hold him at gunpoint claiming that Jack ruined his life. Seven years ago he came upon an Ancient artifact at a garage sale that allows him to see all of SG-1's missions.
SG-1 is sent to warn Harry Maybourne that the goa'uld System Lord Ares is coming to the planet where he was banished, and in the process they find what may be an Ancient time machine.
The replicator Carter and the real Carter work together with the disruptor signal. The replicator has a different plan.
When the Stargate gets beamed out of SGC in the middle of the night, Teal'c is stranded off-world. Dr. Jackson and Colonel Carter attempt to recover the gate.
Teal'c is unhappy with his son's plans to marry. Ishta arrives bringing news that Hak'tyl may be compromised. Complications arise when O'Neill allows Hak'tyl to inhabit SGC until a new homeworld is found for them.
The discovery of the Stargate creates a war between two nations on the planet Tegalus with Daniel in the middle of it.
As the new head of the SGC, General O'Neill is beginning to feel the weight of his load, and he starts to have second thoughts about the whole idea, questioning his own competency.
To save his job, Dr. Felger tests a new virus on the Stargate Network to help control it and it ends up disabling it instead.
In exchange for new tech for the SGC, Warrick Finn asks for their help to win a dangerous spaceship competition.
When a SG geological exploration mission runs into deadly conflict with an indigenous Unas clan, Daniel gets Chaka to help seek an accord with it.
While exploring an crashed alien ship full of passengers in cryostasis, an alien force has downloaded a number of their consciousnesses into Daniel.
SG-1 investigate a seemingly idyllic and subtly advanced human colony sheltered inside an energy dome on an otherwise inhospitable planet.
A teenage boy shows up at the SGC claiming to be Jack O'Neill. He recalls a dream in which an Asgard was studying him. They determine that they must find this Asgard to fix what has been done to Jack.
Teal'c is having strange nightmares featuring Apophis in which he is human and a firefighter with the rest of his team alongside him.
The US and Russia reveal Stargate Command and its operations to representatives of the other permanent members of the United Nations Security Council.
Senator Kinsey is shot in the chest at a public event, killing him just before his party's presidential nomination. Jack is arrested for the murder, and General Hammond assigns the rest of SG-1 to uncover the truth.
Anubis' weapon continues to threaten Earth. Various plans are tried until Jonas Quinn suggests something simple that just might work. Meanwhile, Master Bra'tac has discovered the planet from which Anubis is launching the attack. He, Teal'c and Rya'c journ
Master Bra'tac arrives with bad news: Teal'c's wife is deathly ill, and Teal'c leaves to be with her. Shortly thereafter, the gate is opened but nothing comes through. Then Carter discovers a very low power signal that is slowly building an overload power
As Jackson suffers from a fatal dose of radiation, he struggles with the value of his life while his friends deal with the emotional and diplomatic repercussions.
To fix a mistake caused by the fake SG team, the real SG-1 must enlist the help of two convicts. The threat of an approaching Goa'uld mothership stresses the repair of the Sentinel.
A new leader has risen among the Free Jaffa, K'tano, former First Prime of Imhotep. SG-1, accompanied by Bra'tac, seeks an alliance between the Tau'ri and the large force he has amassed.
In a Tok'ra plan to wipe out the Goa'uld, Daniel goes undercover as Yu's servant to release a poison at a meeting of the system lords. Meanwhile a Goa'uld attack on the Tok'ra base leaves the rest of SG-1 with their hands full.
When Teal'c is trapped in the Stargate buffer, the team must juggle the technical challenges along with personal, interdepartmental and diplomatic rivalries to rescue him in time.
While SG-1 is conducting training exercises for new recruits, Jack gets a call about a "foothold" situation. Wounded by compromised officers, O'Neill must lead the recruits in retaking the SGC.
SG-1 makes contact with the Aschen, unaware of that their homeworld is one they were warned previously from the future to be considered off-limits.
With the death of Omac, the subsequent sudden Tollan reconsideration of their tech embargo leads to SG-1 suspecting a government conspiracy.
When Daniel's Unas friend, Chaka, is captured by another world's slavers, SG-1 goes to that world to rescue him.
When SG-1 inadvertently dooms a planet upon arrival, the team must overcome Asgardian diplomacy and indigenous religious prejudice to put things right.
When SG-1 flees from an expedition with Col. O'Neill and some mysterious team member named, Tyler, whom no one else knows about, stranded, the fitness of the team is questioned.
After being rendered unconscious during an expedition, Carter's subsequently ordered furlough is interrupted by a mysterious being with a message and growing affection for her.
To help Teal'c mind clear again, SG-1 asks Bra'tac to help. Bra'tac removes Teal'c's Gou'ald and Teal'c is forced to remember certain memories of his past. The real Teal'c in the end. SG-1 is glad to have him back.
Stranded in another galaxy while fleeing their attack on Apophis' fleet, that proves just the beginning of their problems as multiple enemies appear.
SG-1 delivers their newly confiscated Goa'uld mothership to help the Tok'ra evacuate their planet and deal with their disinformed Goa'uld spy in their midst.
When the SGC probes a new planet, an alien energy entity there responds by invading the SGC's computer systems, and then Major Carter herself.
Carter decides to inspire a brilliant but difficult Air Force cadet by introducing her to the SGC program.
When one of Daniel's professors dies in a lab explosion which might be related to the Goa'ulds, he comes back to Chicago to investigate what really happened.
While testing a new spacefighter made from Goa'uld parts, Col. O'Neill and Teal'c are trapped when a hidden automatic recall function takes over and sends it into space.
The SGC is contacted by a strange man called Martin, a conspiricist who believes he is an alien. The question is, how does Martin know about the Stargate and how come he has a gate address and is he being drugged by others?
On the Enkarans' new home, SG-1 discovers a giant spaceship is threatening the colonists as it terraforms the planet.
The SGC learn that the Russians have a Stargate of their own and they need the Americans' help with their problems with it that are affecting them both.
Col. O'Neill and Teal'c realize they and their friends are trapped in a time loop.
An old love of Teal'C approaches the SGC and the Tok'ra claiming that her Goa'uld symbiote has been convinced to defect with their help.
SGC is contacted by an advanced and embattled alien human civilization seeking military assistance, but their exact reasons for it become increasingly suspect.
SG-1 has to deal with a Replicator infestation on a Russian sub on Earth while Major Carter advises the Asgardians about combating the menace in their space.
Col. O'Neill is dismissed from the SGC for stealing alien technology, and is subsequently approached to participate in an even more covert Stargate operation.
After a cataclysmic meteorite bombardment, Col. Jack O'Neil finds himself stranded on a primitive planet with its stargate apparently permanently inaccessible.
The SG-1 team is requested by the Tollan to participate in a trial concerning Skaara and whether he has control of his body or the Goa'uld parasite, Klorel.
The team discovers an early industrial world with suffering from collective amnesia and has no elderly people.
While enjoying the help of a planet's super precocious children for a project, the team discovers their horrific imposed fate when they reach a certain age.
When the SG-1 team discover a sealed chamber of dead Goa'ulds, Daniel Jackson is exposed to the parasites that killed them and threaten to drive him insane.
The Asgard and three Goa'uld System Lords meet at Stargate Command to negotiate a treaty modification, but subterfuge and treachery threaten not only the success of the negotiations, but Earth itself.
O'Neill, Carter and Jackson are trapped on Hathor's planet. Teal'c and Hammond go to Chulak to forge a rescue plan and recover the team.
A solar flare sends SG-1 back in time thirty years to 1969. Captured by military police at Cheyenne Mountain, they escape with the help of a young Hammond and then must find the Stargate so they can return to the present.
While testing new technology, a UAV malfunctions and crashes on a planet. SG-1 goes to determine the cause of the malfunction, but discovers that their presence may be causing serious injury to the planet's primitive inhabitants.
Teal'c's son Rya'c is kidnapped by Apophis and SG1 tries to rescue him. When Rya'c is recovered he denounces his father and helps to capture the team. They escape, but will they be able to return to Earth and cure Rya'c?
SG-1 discovers an ancient artifact and brings it back to the SGC. Ariving at the SGC, it becomes active, pins O'Neill to the gate room wall, and unleashes a virus into him.
Samantha Carter becomes the hostess of a Goa'uld when she was trying to save the life of the previous host.
The Stargate team must justify the project's continuation when a doubtful senator, Head of the Congressional Military Appropriations Committee, comes to review the project's performance.
Upon arrival on planet P3X,989 the team are rendered unconscious. When they wake, they return to Earth, but soon find out that they are Androids. The team must return to the planet to find out what happened to their real bodies.
Following a Stargate technical defect, O'Neill and Carter are stranded next to a Stargate in a cave on an icy wasteland. O'Neill is severely wounded and both are freezing. Will the SGC find and rescue them in time?
It is time for Teal'c's son Rya'c to have his primtal. Can Teal'c stop his son from being implanted with a goa'uld and becoming a slave to Apophis?
On the planet Argos, Kynthia seduces Colonel O'Neil, which gives him an Argosian lifespan of only a 100 days. As his skin turns the color of death, will the SG-1 team succeed finding a cure?
The SG-1 team is sent after the SG-9 team that has failed to return. They find that SG-9's captain, having been treated like a god by planetary inhabitants, is drunk with power and is tyrannizing them. Can they overcome him?
The Stargate base is put in deadly peril when it is contaminated with a dangerous infection which causes its victims to become mindlessly animalistic brutes.
While exploring a world populated by Mongol descendants, Capt. Carter is abducted as a wife of a local warlord.
Col. O'Neill is brought out of retirement to lead a new expedition back to Abydos, only to find an old friend, a new enemy and a far wider use of the stargate.