Fantasio gets an Unexpected Inheritance from his uncle Tanzafio. But he's put in a competition with his first cousin Zantafio: the one who will inherit all will be the one who will manage to complete three differents tasks. This album mark the first apparition of Zantafio and the Marsupilami.
Tropes associated with this story include
- It's the Journey That Counts: There is no money to inherit as Tanzafio is ruined, and he wanted his nephews to have their characters built through the trial.
- On One Condition: Fantasio and Zantafio face off in three trials mandated by their uncle's will.
