New Orleans. Gary Johnson is a lonely university professor of philosophy and psychology living an ordinary, boring life with two cats. Gary is knowledgeable about electronics and one day starts helping the police set up and tune listening devices. Before the start of another operation, it turns out that the cop who is supposed to pose as a hitman has been suspended from work for four months due to a scandal involving excessive use of force. As a result, in order to gather evidence and arrest the future client of the murder, Gary has to play the role of a killer himself. Everything goes successfully, the criminal is arrested, and Gary begins to participate regularly in special operations, pretending to be a tough elimination specialist. On his new assignment, fate brings Gary together with the charming Madison, who wishes to kill her despised husband.