Max and Riton, 2 thieves make plan to steal money in a train station office. They will operate through the wall in the public toilets.

Urbain Donnadieu's first love is money. It's also his second, third and fourth love. The only reason he married - a tax inspector named Fleurette - was to avoid a fine for tax evasion. For several years, he has been stealing money from his construction company and buying gold bars with his ill-gotten gains. His plan is to deposit all this wealth in a Swiss Bank, where neither his wife - whom he is about to divorce - nor the French State can get at it. Accompanied by his money-grabbing Granny Zézette, Urbain heads off for Switzerland, with his gold concealed in the walls of a model house on the back of a trailer. Unfortunately, his scheme is threatened by his wife and his embittered ex-chauffeur, who are determined to get his money at any cost...