Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.
Lisa Dolittle sends her daughter to 'Durango', a Dude Ranch, to find herself. While there, she uses her talent to talk to the animals in order to save Durango from being taken over by a neighboring Ranch.
SG-1 searches for an ancient weapon which could help them defeat the Ori, and discover it may be in the Ori's own home galaxy. As the Ori prepare to send ships through to the Milky Way to attack Earth, SG-1 travels to the Ori galaxy aboard the Odyssey. The International Oversight committee have their own plans and SG-1 finds themselves in a distant galaxy fighting two powerful enemies.
