A team of explorers made up of soldiers and scientists travels through a Stargate, an ancient portal to other planets. They use the Stargate to explore new worlds, forge ties with friendly civilizations and protect Earth from hostile forces. The TV series is based on the theatrical film `Stargate'.
Michael Shanks makes his hotly-anticipated return to the series as Dr Jackson in an action heavy opener which sees SG1 take on the Goa'uld System Lord Anubis. (S7, ep 1)
As Anubis prepares to attack Kelowna and steal the Naquadria, Teal'c asks Ba'al to lead a revolt against the rogue System Lord. (S7, ep 2)
When a teenage boy claiming to be Colonel O'Neill turns up at the SGC, the team begins an investigation. Unfortunately, time is not on young Jack's side. (S7, ep 3)
Using knowledge remembered by Daniel in flashback, SG-1 mount a rescue mission to save Teal'c's son Ry'ac and his mentor Bratac from Goa'uld enslavement. (S7, ep 4)
SG1 can't explain why the townsfolk on P3X289 are disappearing until O'Neill and Daniel realise that the biodome they live in is shrinking - along with the population. (S7, ep 5)
Daniel becomes a human lifeboat to the souls of a dozen cryogenically frozen people who are transferred to him after their ship crashes and the power fails on P2A-347. (S7, ep 6)
As SG-3 prepare to go to war with the Unas over a Naquadah mine, Daniel reunites with his old friend Chaka in the hope of reaching a peaceful compromise. (S7, ep 7)
Carter swaps her motorbike for a Naquadah powered space cruiser when she enters the Loop of Garat race. Can the closet speed demon defeat the galaxy's best drivers? (S7, ep 8)
Chaos is unleashed on the Stargate system when SG-1 wannabe Dr Felger ropes Carter into developing a programme that is supposed to give them control of all gates. (S7, ep 9)
Jolene Blalock is Ishta, the beautiful leader of Ha'ktyl, a community of warrior Jaffa who save newborns from death at the hands of System Lord Moloc. Can SG-1 help? (S7, ep 10)
Evolution: SG-1 encounter a synthetic super soldier with the power to eliminate entire armies. While Carter studies it, Daniel researches its origins in Honduras. (S7, ep 11)
Daniel is taken hostage in South America while searching for an alien device reputed to belong to the System Lord Telchak. Jack is sent to rescue him. (S7, ep 12)
Amanda Tapping shines as Sam Carter in this emotive episode. Injured and alone on the Prometheus, she must find a way to save herself. (S7, ep 13)
SG1 return to Kelowna after learning that the planet is in danger of being destroyed by the unstable naquadria forming at its core. Corin Nemec guest stars. (S7, ep 14)
Despite a fatal track record with men, Sam becomes romantically involved with a Denver cop. Meanwhile, Osiris visits Daniel in his sleep. (S7, ep 15)
When the Beta Site is attacked by Anubis's drones, Carter and Jacob get their first chance to test a new weapon. Jacob is injured and Carter goes MIA. (S7, ep 16)
Heroes: Much to SG-1's chagrin, a film crew arrives to document their working lives. (S7, ep 17)
Heroes: Heart-wrenching conclusion. An off-world mission ends in tragedy when a familiar face is shot and killed by enemy fire. Stock up on hankies. (S7, ep 18)
Rescurrection: After discovering that scientists on Earth have combined a human clone with a Goa'uld symbiote, Daniel attempts to gain the subject's trust. (S7, ep 19)
New US President Henry Hayes (William Devane) is briefed on the Stargate program. Robert Picardo (Star Trek: Voyager) is back as the acerbic Agent Woolsey. (S7, ep 20)
Lost City: Originally penned for the big screen, this awesome two-part finale finds Earth in dire straits. O'Neill risks his life to stop Anubis destroying Earth. (S7, ep 21)
Lost City: When Anubis attacks Earth, General Hammond launches an offensive. Meanwhile, the search for the lost city continues and Jack's health deteriorates. (S7, ep 22)