Donald Duck joins the Navy and sends Huey, Dewey, and Louie off to live with his uncle Scrooge McDuck. Meanwhile, a mysterious man named El Capitán busts the Beagle Boys out of jail to help him steal an awkward treasure map in Scrooge's possession.
After foiling the Beagle Boys, Scrooge and his nephews decipher the strange marking on the map, which leads to a sunken treasure ship in Ronguay. However, Flintheart Glomgold and El Capitán are out to stop them at every turn.
Upon finding out about the Valley of the Golden Suns, Scrooge begins an expedition to find the treasure therein, starting with finding the map that leads to it. First, he must get one half of the map from High Golden Sun Priest Joaquin Slowly, but to reach Slowly's mountaintop fortress, he must enlist Gyro Gearloose to construct a special aircraft, and Launchpad McQuack to fly it. He is joined by his nephew Donald who is on a three-day leave in the Andes Mountains.
The nephews, Webby, and Mrs. Beakley find themselves joining Scrooge in his adventure as he looks for the second half of the treasure map in Antarctica.
Scrooge develops gold fever as he and the gang make their way to the Valley of the Golden Suns, all the while pursued by El Capitán.
Everyone begins seeing double when Magica DeSpell gets the Beagle Boys to help her steal the Number One Dime, disguising them as the nephews. Can the nephews expose them before the dime is stolen (and before Mrs. Beakley loses her mind)?
An ancient Egyptian Civilization abducts Donald so that he can host a spirit of a Pharaoh. But the jealous high-priest unleashes a mummy to destroy Donald, and it's up to Scrooge and the boys to save him.
Gyro's props for a science fiction television show accidentally launch the cast into space, and Launchpad becomes the hero when it is realized that he is the only real pilot on board.
Gyro presents the McDuck household with a robot named Armstrong to do their work for them. However, the robot decides it would rather work for itself.
After the incident with Armstrong, Gyro builds giant human-operated robots for Flintheart Glomgold, only to have them be stolen and operated by Ma Beagle and the Beagle Boys.
Magica's plot to steal the Number One Dime using her own shadow goes awry when her shadow develops a mind of its own.
Scrooge and Glomgold race for mastership of Aladdin's genie, who makes it difficult by sending them back in time to the Arabian Nights.
Scrooge turns a castle once owned by a mad scientist into a hotel, but he does not believe that the place is haunted.
Scrooge goes searching for a crown in the Himalayas, which is guarded by a snow beast.
Scrooge is framed for stealing a painting from Glomgold's art gallery and sent to Aquatraz.
The Beagle Boys steal Gyro's handheld teleporter and use it to steal Scrooge's fortune.
Gyro, tired of being looked upon as a "gadget man", invents a time machine and uses it to go back in time to the Middle Ages.
Scrooge and Launchpad explore a land where dinosaurs still live, but the kids tag along against Scrooge's directions to the contrary.
After being fired by Scrooge, Launchpad is tricked by the Beagle Boys into performing a series of bank robberies disguised as movie scenes.
Having a hard time at camp, Doofus accidentally finds a stolen alien crystal that grants him numerous super powers.
Mrs. Beakley is abducted by Vikings from Norse mythology and it is up to Scrooge and the others to rescue her.
A family debt causes Scrooge to lose his entire fortune, sending his entire family into the poorhouse.
Scrooge and the boys track down a lost play of the famed playwright William Drakespeare. But a master salesman is also on their trail.
Launchpad's family comes to visit while the Beagle Boys eye Scrooge's new jet so that they can use it to pilfer his Money Bin.
Scrooge learns that a pearl he bought will grant him infinite wisdom once he takes it back to its homeland. But a slippery pair of thieves want the pearl for themselves.
Scrooge, the nephews, and Webby visit Scrooge's ancestral home in Scotland, only to be embroiled in a mystery surrounding Castle McDuck, involving Druids and a Ghost Hound.
When going to Duck Ridge for an American Civil War reenactment, Launchpad encounters aged Union 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.
Scrooge and the boys head to a swamp in search of the fabled Fountain of Youth from Spanish mythology. There they encounter the ghost of Ponce De Loon.
Scrooge and the boys discover that the games of an underground civilization are causing earthquakes directly under the Money Bin.
According to Greek mythology, Circe, a wicked sorceress from the past, accidentally transports Scrooge and the boys back to time of Ancient Greece, where they meet up with Homer.
Scrooge seeks to find out why his ships are disappearing in the Bermuda Triangle.
Scrooge misuses an alien size-shifting device, and accidentally ends up shrinking himself, the boys, and Webby, to the size of ants.
Scrooge takes the kids to the Klondike, where he met an old flame, Glittering Goldie.
Webby helps trains a horse for the Kenducky Derby so the owner will have the money to raise it.
Scrooge loses the new combination for his vault to a lemming that the boys and Webby got him as a pet.
Scrooge and Glomgold compete in a contest where the winner, being the world's richest duck, becomes the sales broker for a new fruit from Macaroon that works like a flashlight. First, though, Scrooge must keep his fortune away from the Beagle Boys.
As Scrooge tries to deliver his fortune to Macaroon, he experiences an interference in the form of a rogue Navy super-submarine working for Glomgold. Donald is there to help his uncle reclaim his fortune.
After dumping his fortune under the sea, Scrooge, along with Launchpad, Gyro, and Doofus, submerges in order to get it out. There they encounter an underwater race of mermen, and a monster named Glubbzilla.
Glomgold and the Beagle Boys attempt to make sure Scrooge does not win the contest on his way to Macaroon.
The Nephews, Webby, and Doofus attempt to earn a Junior Woodchuck badge in sailing while a sea monster is preying on Scrooge's shipping fleet.
After hearing about Launchpad's encounter with several Harpies, Scrooge heads to the Black Sea to seek out the legendary Golden Fleece. However, the fleece is guarded by a Sleepless Dragon.
Scrooge and the boys go to Scrooge's oil wells to find out why they ran dry.
Gyro invents a watch that allows anyone to move super fast. But the Beagle Boys want to use it so they can steal all of Scrooge's money. Things get worse when the whole group ends up traveling backwards in time and end up meeting pirates.
Something's attacking Scrooge's sheep and shearing off their wool, so Scrooge heads off for Australia to find out what's going on. What's worse, is that Webby gets lost in the outback.
Scrooge acquires a magical harp that can determine if someone was lying or not. However, Magica de Spell wants the harp for herself, and so does the harp's guardian: a five-story stone Minotaur.
After being fired by Scrooge, Launchpad enters the space program, and accidentally gets sent to Mars. Worse, Doofus joins him on his trip, the pair accidentally causing the Martians to attack Earth.
While experiencing a fever, Scrooge has an extended dream sequence parodying the fairy tale of Cinderella, with himself in the titular role.
Launchpad finds himself masquerading as Bruno Von Beak, an agent for the Foreign Organization of World Larceny, whose leader, Dr. Nogood, wants to wipe out the world's money supply.
After finding a leprechaun in his cargo, Scrooge is led to Ireland, where he believes that he will find a vast fortune of gold. However, the leprechauns will not give it up without a fight.
After being fired by Scrooge, Duckworth and the boys are abducted by plant aliens and enslaved aboard their ship along with dozens of other kidnapped aliens.
Magica uses a pair of magic mirrors to try to get Scrooge's Number One Dime.
Magica sends Scrooge into the future, where she has stolen his Number One Dime and taken over his company.
While accompanying Scrooge in his search for silver, Mrs. Beakley encounters a Tarzan-like character who used to be a boy she helped raise as a nanny.
Scrooge and Launchpad reminisce on how they first met.
Magica tricks Gladstone Gander into stealing the Number One Dime for her, and as a result, he is cursed with bad luck.
Scrooge and the boys take a trip to visit an old friend of his, Count Roy. However, unknown to Scrooge, Roy's evil twin Ray rules Roy's kingdom with an iron fist.
Scrooge makes a bet with Glomgold that he can make money off a blimp called the Hindentanic.
Seeking respect from other members of Duckburg's elite, Scrooge hunts down a mask he gave away, while other people hunt him down.