The White Rhinoceros

S2, E9: The Newtown Zoo has a new inhabitant: Nico Rhinoceros. First Nico has to pass through a new fully automatic animal washing system invented by Eddie Eddison. As he does so, he surprisingly loses his gray skin color and is suddenly white. The Director sees at once that Nico is a valuable albino rhinoceros. When the wicked director of Newtown's visiting animal show discovers this, he steals the white rhinoceros. Benjamin and Otto immediately set off to look for him and follow Nico's trail through the whole of Newtown.