The Stooges want to fly for the Royal Air Force, but end up as mechanics working in a motor-pool garage. When given the assignment of getting a 'squeak' out of the Colonel's car from his assistant Kelly (Duke York), they get sidetracked after Moe's head gets stuck in a pipe. After several painful attempts, they finally unscrew Moe from the tight quarters, and he eventually chases Larry and Curly around the vehicle, breaking the windshield in the process. The Stooges disassemble the entire engine, and are still puzzled, as they are not exactly certain what a squeak looks like. Kelly comes to retrieve the Colonel's car, with the Stooges still hoping to be airmen.