International crook Armstrong flees post-war Tangier with priceless forgery plates. International crook Voss sends pretty Michele after him. Arriving in London, Armstrong accidentally swaps coats in a barber's shop with film actor Chuck Collins. Through an address in his new coat's pocket, Collins meets up with Michele. Voss' partner, international crook Heinrich, starts to sense a double-cross. When Armstrong is thrown out of his hotel window, the police start to sense foul play.