An ex-thief is accused of enacting a new crime spree, so to clear his name he sets off to catch the new thief, who’s imitating his signature style.
When his wife leaves him, a young French actor, François Combe, moves to New York to work for a television company. One evening, he meets an attractive young woman, Kay Larsi, in a bar.
1944. Léon Duchemin owns a restaurant with his sister. His clients are Germans, Résistance et black marketeers. Léon unwillingly joins the Résistance when a British pilot is shot down and hides in his attic and, through a series of mishaps, he accidentally steals the plans for Hitler's V1 missiles.
