With no one else to watch them while he attends a job interview, Donald Duck begrudgingly leaves his nephews Huey, Dewey and Louie with his uncle Scrooge McDuck, who has difficulty bonding with them. Webby Vanderquack, the granddaughter of Scrooge's housekeeper Mrs. Beakley, befriends the boys and shows them examples of Donald's heroics as Scrooge's sidekick, but they inadvertently release various ancient evils housed in the artifacts in Scrooge's garage.
The nephews take Webby to Funso's and have a dangerous run in with the Beagle Boys. Donald rebels against Mrs. Beakley's strict "house rules".
Louie accidentally spends Scrooge's Number One Dime on a soda and turns to mad inventor Gyro Gearloose for help to get it back, while Dewey and Webby find information about Della Duck.
Webbigail meets a new friend and crashes Ma Beagles birthday party.
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.
Launchpad recruits Gizmoduck after he's menaced by tech genius Mark Beaks' newest invention.
Scrooge and Glomgold face off in the "Duckburg Millionaires' Club Golf Invitation" in the Scottish Highlands, assisted by Huey, Dewey, Louie, Launchpad and Webby. The game is however hijacked by the spirits of ancient druids and turns lethal, with petrifying mists and a couple of kelpies attempting to have them drowned.
Huey decides to throw a birthday party for Scrooge, despite everyone warning him that Scrooge hates celebrating his birthday. When Scrooge goes missing and the guests turn out to be his worst enemies, Huey decides to solve the mystery, unaware that the ghost of Scrooge's faithful butler, the long deceased Duckworth, is involved.
The kids and Launchpad work together to capture a mystical money shark while Scrooge attempts to better his public image with a televised interview.
Scrooge re-teams with his conniving ex-partner and old flame, Goldie O' Gilt, to find a long-lost golden lagoon, but Glomgold has other plans.
When Dewey invents a holiday that allows the triplets to be only children for a day, each realizes they need their brothers more than they thought.
Webby learns how Scrooge and Mrs. Beakley first met while she helps Scrooge rescue her granny from the clutches of rival spy Black Heron.
As Fenton figures out how to be a hero, Mark Beaks offers to hire Gizmoduck and help him defend all of Duckburg.
Lena's loyalties are tested when Magica forces her to lead Webby on a raid to a facility full of Scrooge's most dangerous artifacts to find his No. 1 Dime.
Feeling ignored, Dewey finds a new family: a band of singing and dancing pirates looking to rob Scrooge blind.
On a family trip to Scrooge's ancestral castle, Dewey tries to hide the truth about his mother as his brothers search for family secrets.
Stuck on a precarious peak, the kids secretly search the plane for clues about Della's disappearance.
Magica De Spell is close to exacting revenge on Scrooge, so the family races against time to plan a dangerous rescue mission to save Scrooge and the city.
Magica De Spell is close to exacting revenge on Scrooge, so the family races against time to plan a dangerous rescue mission to save Scrooge and the city.