During the Second World War, Yvon joins the Gestapo to save his Jewish girlfriend, Stella, from deportation. When France is liberated, he has to answer for his past. Hunted, he decides to escape to Spain, but Stella refuses to go with him.
A pair of lookalikes, one a former French aristocrat and the other an alcoholic English lawyer, fall in love with the same woman amongst the turmoil of the French Revolution.