A great adventure with daring heroes - not for chicken with feet of cheese Klink, Klink, Klonk! While the hamster Bertram von Backenbart sits somewhat bored in his golden cage on the terrace of a noble Hamburg penthouse apartment, two mice and a white rat fall from the gutter into his home. When the three introduce themselves as Picandou C. Saint Albray, Pomme de Terre and Gruyère, the hamster is thrilled! The French names remind him of his beloved stories about the "muscle animals", which he knows from his owner's radio play CDs. And when hamster Bertram learns that Gruyère has lost his memory, he is determined to help his new friends and experience exciting muscle-animal adventures...