Once a renowned criminal, Bob the Gambler now contents himself with gambling, frequenting casinos in the shady districts of Paris. He is convinced his gangster days are over - until he meets up with an old accomplice who has news which interests him. The casino at Deauville has a safe which is loaded with several hundred million francs. Short of cash, Bob decides to plan one last great robbery. He recruits a number of former fellow criminals and plans the theft to the greatest detail. Unfortunately, on the day of the robbery, things rapidly begin to go wrong. Bob's luck appears to have taken an unexpected turn - for the better.