主人公Pernell Harris（Ron Perlman）是一位很有权势的法官，时常会干违背法律的事情。他已经结婚，但和一个高级应召女郎打得火热。在一次精神崩溃之后，他突然开始看到幻象，并且听到因自杀失败而陷入昏迷的儿子PJ开口说话。他就像突然「觉醒」一样开始信奉宗教，他认为上帝在通过他的儿子和他交流。从那一刻开始，他决心当一个「侠客」，不把那个导致他的家庭四分五裂的强奸犯抓住决不罢休。他手头没有任何实际证据，因此他主要依靠那些幻象和上帝通过儿子传递的信息来寻找线索。
This 7-year series chronicled the adventures of the Impossible Mission Taskforce (IMF), a team of government spies and specialists who were assigned "impossible missions" by the unseen "Secretary". Although the cast varied over the years, the main characters included The Team Leader (Dan Briggs the first season, then Jim Phelps the other six), The Techno-Wizard (Barney Collier), The Strongman (Willy Armitage), The Master of Disguise (first Rollin Hand, then The Amazing Paris), and The Femme Fatale (Cinnamon Carter, Casey, Dana Lambert, Mimi Davis). The series is best known for its opening mission assignment (conducted by a pre-recorded tape), the theme composed by Lalo Schifrin, the leader's selection of mission agents from a dossier, the opening briefing, the intricate use of disguises and a typical "mask pulloff" scene near the end of most episodes, and the relative lack of characterization of the characters.
