The spy series Alias is all about the student and double agent Sydney Bristow. Sydney thinks she has been working for a government agency for seven years, but when her fiancé is murdered by SD-6, she discovers she works for a terrorist arm. She approaches the CIA and becomes a double agent for them. Sydney goes on missions for SD-6, but passes all the information on to her CIA accomplice Michael Vaughn. The fact that the two are strongly attracted to each other makes the situation even more complicated. Sydney is constantly at risk of being exposed. In the series, we get involved with secret agencies, get acquainted with the latest gadgets and witness worldwide espionage missions.