Huey is trapped inside a mummy case and taken to Egypt by emissaries of the Bey El Dagga, who is restoring life in his province to the way it was in ancient times. Donald and the other two nephews follow Huey by getting jobs on the ship carrying the mummy case, and later sailing a felucca up the Nile to the Bey's domain.; An organ grinder gives the nephews a monkey named Jingo, who plays hob with Donald's house until Donald sells him to a stranger. The stranger proves to be a foreign spy who tries to use Jingo to steal some secret plans.; Donald and the nephews are rivals in the "Screwball Derby," a cross-country horse race in which any dirty trick may be played on the other contestants.