The seven-ups are a secret, elite New York detective squad who are very effective in catching criminals, even if their tactics are questionable. However, what one of the detectives doesn't know is that one of his informants is the mastermind of a plot to kidnap loan sharks. The kidnappers get to their victims by impersonating police officers. While investigating one of the disappearances, one of the seven-ups gets spotted and is killed. The situation puts the seven-ups in a precarious position because it looks like they are tied to the kidnappings. So now one detective has to find the murderers and clear the seven-ups' soiled reputation.