The competition for the best chef on Souris Island is organized. Of course, Traquenard, Geronimo's gourmet cousin, hastened to register! But he chooses Geronimo as an assistant... or rather, as a taster. Traquenard arrives in the final... but falls and hurts himself: Geronimo must therefore replace him for the last test. What will he be able to cook to win the contest?