Huey competes against Violet in a race for a promotion to Senior Junior Woodchuck, while Scrooge and the rest of the family search for a secret Junior Woodchuck treasure.
The family joins a zen mermaid society to find a missing mystery, but Louie is convinced the seemingly innocent mermaids have a villainous agenda of their own
Gyro, Fenton and Huey take a malfunctioning B.O.Y.D. back to the lab where he was created in Japan, but as Huey bonds with the robot boy, a secret from Gyro's past threatens to destroy the city and Gizmoduck.
When Penumbra begins feeling homesick, Webby sets out to prove to her that Earth can be just as fun, by riding Glomgold's newest gift to Duckburg, the suspicious Flintferris Glomwheel.
The kids forego their usual trick-or-treat path and instead take on the most haunted house in Duckburg, while Launchpad confronts ghosts from the past.
While racing against Rockerduck to the fountain of youth Scrooge and Goldie O'Gilt are turned into teenagers, while the boys' sibling rivalry uncovers danger at a spring break hotel.
With F.O.W.L. at their heels, Scrooge tests out the Money Bin's new security system on Louie and Della, while Beakley and Webby train the others for an enemy attack.
Scrooge is forced to babysit young Donald and Della as they go on their first adventure to find a powerful artifact, unaware that Bradford is taking on this mission personally.
A bitter feud between Scrooge and his sister, Matilda, spreads to the rest of the family as Phantom Blot attempts to steal a priceless artifact and destroy Castle McDuck once and for all.
Huey struggles to keep Fenton and Gandra's top-secret experiment (and their relationship) hidden from the world, but Mark Beaks is desperate for one last gizmo to steal.
Della, Dewey & Huey recruit a showboating pilot to take them to an island full of monsters, While F.O.W.L. lurk in the shadow waiting patiently. With danger at every bend and turn, the family must join together to fight for their future.
Scrooge's enemies reveal a secret history to prove that he is responsible for turning them evil, forcing Louie to defend his uncle against their prosecutor, Doofus Drake.
The future of adventuring hangs in the balance as the Duck family uncovers earth-shattering secrets in a final standoff with the Fiendish Organization for World Larceny (F.O.W.L.).