A villain is there to be put in their place. And Billy manages to do just that – of course! Alongside hamster Billy, a villain has moved in: a badger named Brezel. When he takes the entire carrot supply from the rabbit family, it becomes clear to Billy and Hans-Peter that they must intervene. First, Billy frees a bird that Brezel has trapped in a cage, and eventually, he actually succeeds in driving the badger away. Billy is a hero, just like in a storybook, and at the end of this adventure, he is rewarded with his favorite treat, Dad's freshly roasted hazelnuts! Catharina Valckx's Billy books are also so popular because they bring so much joy to adults when reading them aloud!.