These are the adventures of the misfit crew of PT-73 during World War II. They're one of the best fighting crews in the Navy, but break regulations when it suits them. Their commander, LCDR McHale, is at times as roguish as his crew, but he puts his foot down when things go too far. They are assigned an XO, Ensign Parker, who is by-the-book, but too much of a klutz to command too much respect. They have a house-boy Fuji, who deserted the Japanese Navy, who wears a POW outfit just in case he's caught so he won't be shot at. Their nemesis is CAPT Binghamton and his aide LT Carpenter. They're initially stationed in the South Pacific, but move to Italy in the last season.