Huey, Dewey, and Louie (Russi Taylor) are left in the care of their Uncle Scrooge McDuck (Alan Young) when their Uncle Donald (Tony Anselmo) joins the Navy. Scrooge is the richest duck in the world and is always on the lookout for ways to increase his wealth. With his three nephews and brave but naive pilot Launchpad McQuack (Terence McGovern), he travels the world in search of treasure.