Sydney Bristow, a young and athletic college graduate, is recruited as a Secret Agent for SD-6, a top-secret CIA branch, during her freshman year. However, she soon discovers that SD-6 is part of the Alliance of 12, a rogue international agency seeking world domination. To take down SD-6, Sydney becomes a double agent, working with the real CIA and her handler Michael Vaughn, as well as her estranged father Jack Bristow, who is also a double agent.
Sydney Bristow discovers that her job as an agent for SD-6, a top-secret divi...