A stubborn farmer is raising his children alone. When his oldest daughter gets a suitor, the father nearly goes on the rampage, but he is forced to change his tune when he is injured, leaving her in charge of the farm.

The stooges are auto mechanics working for the R.A.F. in England. After wrecking an officers car they need a place to hide, but their choice, a sewer pipe, turns out to a bomb which is dropped on the enemy. Finding themselves behind enemy lines, Moe and Curly disguise as German officers and Larry dresses as a seductive fraulein. While general Bommel chases after Larry, Moe and Curly steal the secret plans from the high command.

The stooges are living with their mother who persuades them its time to leave home and seek their fortune. After a con man sells them a phony deed to a lost gold mine, the boys head west to find the treasure. After some mishaps with Curly's gold finding invention, they locate the mine and strike it rich. When two crooked miners try to take their gold they hole up in an abandoned hotel and, although they get bombarded by dynamite, triumph over the crooks.

In Tangier, disgraced American war correspondent Paul Kenyon, café dancer Rita and local entrepreneur Pepe join forces to battle a Nazi diamond smuggler.