The introduction of the series, as Donald Duck joins the Navy and sends Huey, Dewey, and Louie off to live with their uncle Scrooge McDuck. Meanwhile, a mysterious man named El Capitán busts the Beagle Boys out of jail in order for them to help him steal an awkward treasure map in Scrooge's possession.
When going to Virginia for a Civil War reenactment, Launchpad encounters aged Confederate veterans who once served under his ancestor, who had lost a battle. Meanwhile, Doofus and the nephews learn that a businessman is exploiting the reenactments for financial gain. Launchpad works to avenge his family's honor by rallying the old veterans to a "rematch" of sorts against the reenactors.
Donald makes up a story about being a hero to the nephews. They stow away in the Navy and try to make him a hero. Meanwhile, The Phantom Blot has a spy infiltrating the Navy while he has Scrooge McDuck and Launchpad McQuack as prisoners on Cat Island after they go to investigate Scrooge's fishing fleet there.
Scrooge buys one of Glomgold's islands, wherein houses a diamond mine. Upon finding out, Glomgold has the diamond mine blown away from the island. Scrooge, Launchpad, and the nephews then go back in time to try to prevent the explosion, but end up going 1 million years back, where they meet Bubba the Caveduck and his pet Triceratops, Tootsie.
Webby, who has been feeling overlooked, ends up becoming a giantess after falling into a mysterious pool in the jungle. While she is now the center of attention, she does not like it very much. While Scrooge searches for a way to reverse the process, a corrupt circus owner seeks to kidnap Webby for his new sideshow.
Dijon ends up joining the Brotherhood of the Goose, a group dedicated to protecting the Golden Goose (a goose that can turn anything to gold), led by his brother Poupon. Dijon "borrows" it, but accidentally loses it to Scrooge, who soon discovers its secret but then loses it to the Beagle Boys, whom Glomgold has sent to get it.