Martin Blank is a hitman for hire. When he starts to develop a conscience, he botches a couple of routine jobs. On the advice of his secretary and his psychiatrist, he decides to attend his ten-year high school reunion in Grosse Pointe, Michigan. Martin Blank is a professional assassin. He is sent on a mission to a small Detroit suburb, Grosse Pointe, and, by coincidence, his ten-year high school reunion party is taking place there at the same time.