Peterson's Poi Juice is giving away a trip to Hawaii and Arnold Ziffel is chosen as the winner. When the ad agency rep meets Arnold and discovers he's not a human, he tries to disqualify the swine. Famous pig lawyer Oliver Douglas is retained to fight for Arnold's winnings.

When the Douglases, Eb, and Arnold return from Chicago, Arnold becomes a gift-bearing pig. He gives Mr. Kimball a wristwatch, Lisa an expensive braclet, and Oliver a shrunken head. Arnold soon finds himself the target of every seller from Hooterville, Pixley, and Crabwell Corners, who want their hands on Arnold's inheritance.