Thinking he's hunting down a rat in his attic, Magoo finds himself on the theme park, devoted to...the glory of Fizz. He decides to get rid of the little pest the "rat", who is none other than that megalomaniac hamster. / Magoo comes across Fizz encased in ice and thinks he has found a prehistoric man. He thaws him out and acts like a Cro-Magnon, so as not to distress him. When Weasel tries to save Fizz, Magoo mistakes him for an ill-intentioned scientist. / Magoo thinks he's helping out at an understaffed veterinary clinic. In fact, he's at the supermarket, where Fizz is trying to gain popularity by selling his cleaning products. Magoo mistakes the hamster for the President's sick Yorkshire terrier.