Ori arc

The original SG-1 team disbands after the events of season 8, but slowly reunites under new team leader Col. Cameron Mitchell after the SGC inadvertently draws the attention of the Ancient-like Ori from another galaxy to the existence of sentient life in the Milky Way. While the Ori send enhanced human beings named Priors to the Milky Way to spread a religion that will augment the Ori's power, Ba'al and some minor Goa'uld infiltrate Earth through the Trust (a coalition of rogue NID operatives) to rebuild their power. At the end ofseason 9 ("Camelot (Part 1)"), the Ori begin an evangelistic crusade with their warships and effortlessly wipe out the combined fleet of Earth and its allies. The leader of the Ori,Adria (Morena Baccarin), is introduced in the premiere of season 10 ("Flesh and Blood (Part 2)"). SG-1 searches for the Sangraal, an Ancient weapon that might defeat the Ori, while Ba'al and his clones attempt to find the weapon for their own purposes. With the help of the powerful Ancient Merlin (Matthew Walker), SG-1 finds the construction plans of the Sangraal and sends a working version to the Ori galaxy. Shortly thereafter, Adria ascends. The direct-to-DVD film Stargate: The Ark of Truth ends the Ori arc.