Donald Duck reluctantly takes his nephews Huey, Dewey and Louie to the home of their reclusive great-uncle Scrooge McDuck. Enthralled by their once legendary great-uncle and the wonder of McDuck Manor, the triplets and their newfound fierce friend Webby learn of long-kept family secrets and unleash totems from Scrooge's epic past, sending the family on an adventure of a lifetime to the Lost City of Atlantis.

The nephews take Webby to Funso's Fun Zone and have a dangerous run-in with the Beagle Boys.

Louie accidentally spends Scrooge's Number One Dime and turns to mad inventor Gyro Gearloose for help to get it back, while Dewey and Webby become entangled in a conspiracy.

After crashing Ma Beagle's birthday party, Webby and new mysterious friend Lena must fight their way through Beagle Boy turf to get back home.

Huey and Webby's disagreement over the existence of a mythic species leads the kids to explore an eerie abandoned subway tunnel, while Mrs. Beakley grows suspicious of Lena.

Donald competes with his cousin Gladstone Gander to impress Louie at a mysterious resort in Macaw, while Scrooge tries to lure the kids away from the resort’s endless distractions.

Huey competes with Dewey for a coveted internship with Duckburg's newest tech billionaire, Mark Beaks, while Scrooge and Glomgold team up to take this new competitor down.

In a lost pyramid, Louie interprets a pharaoh's prophecy to his advantage, forcing Scrooge and Launchpad to convince a group of living mummies to rescue him.

Scrooge and Huey are determined to be the first to set foot atop an impossible summit, but the snow-capped mountain holds a treacherous secret that tests both their commitment and survival.

Donald is dragged into a feud between Scrooge and Zeus, while Dewey and Webby search for an artifact that may provide the truth about Dewey’s mother.

Brilliant young scientist Fenton Crackshell-Cabrera is recruited by Launchpad who is feeling menaced by tech genius Mark Beaks’ newest invention.

Dewey’s natural golf abilities challenge Scrooge’s ego while, a seemingly innocent, mystical golf course leads the group into trouble.