 A heavyset man trudges down a quiet neighborhood street, into a dark house, flips on the light-switch, spurring a large group of family and co-workers to yell "Surprise !" It s his birthday, and he generously volunteers to pick up the pizza for the celebration. He s the reform leader of a stevedores  union - when he switches on his car s ignition, the car explodes. The obvious suspect is a mobster who muscles into unions, so the gangster hires Peter Gunn to find the real killer, before the docks explode too.