The Stooges are auto mechanics who work for the R.A.F. in England. After crashing into an officer's car, they need a place to hide. They choose a sewer pipe, which turns out to be a bomb that is dropped on the enemy. Moe and Curly dress up as German officers when they find themselves behind enemy lines. Larry dresses as a seductive fraulein. Moe and Curly steal the secret plans from the high command while General Bommel is looking for Larry.