Einmal Dieb, immer Dieb: Jean Berlinger is a gentleman and master thief. With playful ease he breaks into well-secured museums and steals their most valuable exhibits. The police are always in the wrong. With the money he receives for the precious loot, he supports retirement homes and homeless shelters. In preparation for his next coup, Berlinger meets the beautiful educator Julia. She runs a kindergarten next to the Egyptian Museum, from which Berlinger wants to steal the world-famous Nefertiti.