The team finds a mass of treasure in an Ancient cavern underneath Glastonbury Tor, England. Among them is a Long-range communication device, which is connected to the same stones used by Joe Spencer. When Dr.Daniel Jackson and Vala Mal Doran place the stones on the device, their consciousnesses travel millions of light years to another galaxy, where they originally believed the Ancients to live, but find a completely different, yet similar race.
After Vala Mal Doran removes the Kor mak bracelets binding Dr.Daniel Jackson and her together, they go their separate ways, only to pass out again soon after. The only chance to save them is to see the scientist examining the bracelets. However, in order to get him to help, they must run a series of ever more dangerous errands.
P8X-412, a planet formerly belonging to Qetesh (the Goa'uld who once possessed Vala Mal Doran) has been visited by a Prior. SG-1 visits this planet to convince the simple folk not to worship the Ori.
A Jaffa is somehow found dead on Earth. Stargate Command soon find that Gerak has sent Jaffa to Earth to claim his prize; Ba'al is hiding on Earth and threatens to detonate a Naquadah bomb if they don't leave him alone.
Lt. ColonelCameron Mitchell is ambushed and captured by a group of legendary rebel Jaffa known as the Sodan. However, because he supposedly killed one of their own before he was captured, he is challenged to Kel shak lo, a Sodan battle to the death.
A seeming glitch in a Stargate throws SG-1 off course and onto another planet. After finding a way around it, they discover a lab with a man in stasis named Khalek. They soon realize, however, that he's a genetic hybrid created by Anubis.
SG-6 returns to Earth from investigating a planet visited by a Prior, they inadvertently cause a plague that soon spreads beyond Stargate Command to the unsuspecting public. Orlin returns in the form of a child and tells the Tau'ri the truth about the Ori.
With the plague rapidly spreading to the corners of Earth, SG-1 plan on using a new disruptor device to capture a Prior on the Sodan world, the same Prior who started the plague. Gerak, leader of the Jaffa, has been turned into a Prior to give the Jaffa the chance to accept Origin.
The Galarans have the technology to implant memories into people's minds. When Lt. ColonelCameron Mitchell wakes up with the memory of murdering one of the scientists behind its development, SG-1 must help prove that it is not really his memory and that he is innocent.
SG-1 returns early from a routine mission, believing differently than Major GeneralHenry Landry key details about their mission. Then the real SG-1 returns at their correctly scheduled time. Soon, other SG-1s from alternate realities begin arriving and the real SG-1 must find a way to get them back to their own realities, but not all is as it seems when the first alternate team have plans of their own.
Jared Kane, of the Rand Protectorate, defies orders and travels through the Stargate to Earth. He informs SG-1 that his people were visited by a Prior, who instructed them to build a satellite and, with it, destroy the Caledonian Federation. They send the Prometheus to destroy the satellite, but the ship is itself destroyed, along with a number of its crew.
After a failed mission to learn about the new, extremely addictive Lucian Alliance crop, Kassa, the planet's Stargate is beamed away before SG-1 can escape. After learning that multiple Stargates have disappeared, Major GeneralHenry Landry questions the imprisoned Nerus about who is responsible.
After SG-1 is forced into "babysitting duty" for International Oversight Advisory representatives at the Gamma Site, a swarm of bugs the scientists are investigating escapes captivity and run amok all over the planet.
SG-1 goes to Camelot, after finding its address from Arthur's Mantle, in the hopes of finding a means to stop the Ori before they arrive in the Milky Way. Meanwhile, a new Supergate is discovered, where they plan to prevent the Ori from dialing in, but they are too late.
Added by Pjotr'k
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