A crime is committed in a circus during the performance of a sketch between two clowns. One of them is killed. They accuse the other, Sylvia's fiancé, to whom the victim was courting. After many twists and turns, the murderer is discovered to be the troupe's dwarf.

An evocation of the wartime exploits of the Moroccan "Tabors" in Tunisia, Italy, the French campaign and Germany. During the landings in Corsica, a light-hearted love affair develops between Adjutant Lenoir and a nurse. Fights, escapes and heroic actions lead to victory.