Sydney Bristow is not your average college student - she's a spy. And not just a spy - a double agent. When she learns her employer, SD-6, which pretended to be a secret division of the CIA, is actually an enemy of the United States and wasn't part of the CIA, Sydney turned to the real CIA. There she met her handler, Michael Vaughn, who both have feelings for each other. She has constant revelations about her father, Jack Bristow, who is also a double agent pretending to work for SD-6 but really working for the CIA.