The ducks and a museum curator race Azure Blue, a descendant of the Vikings, to the coast of Labrador to find a golden helmet, left by a Viking explorer, that will give Blue title to all of North America. Once the helmet is saved from Blue, the curator and Donald have visions of ruling the continent.; Donald has trouble getting his store windows shiny enough.; Donald is angry because the nephews have lent his lawn roller.; The nephews sell towels to the victims of an over-active park fountain.