The story of the cheat begins and ends with personal misfortune. When he was a young boy, our hero was caught stealing money from the family shop. As a punishment, he was not allowed to join his family on their picnic. They ate mushrooms and died of food poisoning, he survived and was placed in the care of his unscrupulous aunt and uncle, who intended to rob him of his inheritance. Years later, our hero ends up as a croupier in a casino at Morocco. There, he is about to embark at what looks like being a very lucrative career – as a professional cheat.