When a small-time hoodlum is apparently killed by Eliot Ness during a raid, the man's teenage son, Nicky Bousso, tries to kill him. Ness realizes that Nicky is no hood and tries to be nice, but the kid is persistent. When ballistics confirm that the man was killed before the raid took place, Nicky thinks Ness is just making it up. Nicky gets a job cleaning cars at his father's former place of work, a taxi company owned by Gus Marco.