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.
Two thieves, Hugo Sennart and Yan Kuq, wanted by the same police inspector, cross paths by chance.
Five highly-trained KGB agents are sent to the west to assassinate several Soviet dissidents. In order to stop the diabolical plot, an American agent must infiltrate Soviet intelligence and obtain information from a Russian computer.