A great adventure with daring heroes - nothing for scarecrows with cheese feet Klink, klink, klonk! While the hamster Bertram von Backenbart sits somewhat bored in his golden cage on the terrace of a noble penthouse apartment in Hamburg, 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" 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 muscular adventures ...