Huey decides to throw a birthday party for Scrooge, despite everyone warning him that Scrooge hates celebrating getting older. While Beakley, Webby, and Donald leave for the day, Huey enlists his brothers in holding the party. However, when Scrooge goes missing and the guests turn out to be Ma Beagle, Black Arts Beagle, Beaks, and Glomgold, Huey decides to solve the mystery. In the midst of this, Black Arts seemingly summons a demon to make the other villains disappear, but it betrays him and chases the boys. Eventually, they discover the culprit was Scrooge, with the help of the ghost of his faithful butler, Duckworth, who Black Arts unknowingly summoned.