Miles Logan is a jewel thief who, along with some accomplices, steals a $17 million diamond in Los Angeles. Things go awry during the robbery when one accomplice wants the diamond all for himself and Logan has to hide the diamond at a construction site. Logan is arrested and spends two years in prison. After serving time, Logan heads back to the spot where he hid the diamond only to find that the construction site was the location of a new police headquarters. Logan scopes the place out by becoming a pizza deliveryman, then poses as a detective transferring from another division. He is teamed up with naive detective Carlson and is sent out on multiple police investigations. As farfetched as his fake resume is, he is promoted to Lead Detective of the Burglary Division. Logan eventually recovers the diamond but the accomplice that helped him steal the diamond is hot on his trail. Logan must continue to fool the police and his former accomplice in order to get away.