Monsieur Bens, head of a powerful corporation, is at a loss. His always clumsy and unlucky daughter Marie is missing in Mexico. Now the only person who can help is someone who is just as clumsy as she is and just as unlucky as Marie: the accountant François Perrin. Sensitive and unfortunate, he magically attracts all the misfortunes that can ever befall a human being. Together with the experienced and determined detective Campana, they go on an exciting search for Mexico!