Arthur and Anatole are two little robbers. They want to rob money, money that will travel in a special train from Paris to Bruxelles. They don't know that other people have planned to do the same thing.
The Brain is a 1969 French comedy film directed by Gérard Oury, about a second train robbery by the brain behind the Great Train Robbery of 1963. It stars Jean-Paul Belmondo and Bourvil as a pair of French petty crooks, David Niven as a British Army officer who is secretly a criminal mastermind and Eli Wallach as a Sicilian mafioso.