General Hammond and the Pentagon reveal the existence of the Stargate to other world governments, and must defend the fact that the program is operated by the United States military.

The Tok’ra war with the Goa’uld escalates, and the rebel faction sends Daniel Jackson to a secret meeting between the System Lords.

Dr. Jackson’s undercover mission to a Goa’uld summit is complicated by the arrival of a surprise guest. The rest of the team face a full-scale invasion of the Tok’ra homeworld.

SG-1 finds themselves stranded in a crippled ship in a distant galaxy — with Apophis threatening to destroy them. Teal’c is brainwashed and made loyal to Apophis once again.