The shows opens at Duckburg. After Donald Duck enlists in the navy, Uncle Scrooge has to take care of grand-nephews Huey, Dewey, and Louie. Uncle Scrooge brings the boys to the McDuck's mansion where they are presented to Duckworth, the butler. The nephews are forced to sleep in the attic. Days later, Donald sends a letter to the nephews that tells of his experiences in the Navy. The nephews try to follow Uncle Scrooge but they are held by Duckworth in the Hall. After breaking out of the room, the kids leave the mansion and follow Uncle Scrooge to Money Bin, where the boys find a model boat at the museum. Meanwhile, an evil man named El Capitan hires the Beagle Boys (named Bigtime, Bankjob and Burger) to steal a boat model from Scrooge. In the mansion, the nephews hear Scrooge speak ill of them and they run away. 