Yugi and his friends are in awe over Grandpa’s collection of Duel Monsters cards, but when #1 ranked Duelist and ruthless tycoon Kaiba kidnaps Grandpa to get the rare Blue Eyes White Dragon card, Yugi must face Kaiba in the ultimate Duel Monsters showdown and avenge his Gramps!

Yugi and friends take a break from honing their card-playing skills to watch Weevil and Rex Raptor compete in the Duel Monsters Regional Championship. When Yugi opens a package from Duel Monsters creator, Maximillion Pegasus, Yugi is forced to face him in the mysterious Shadow Realm, where all the monsters and magic are real.

Yugi gives up one of his own star chips so Joey can board the boat bound for Duelist Kingdom and duel to save his sister’s eyesight. Meanwhile, Téa and Tristan stowaway to join their friends.

Once Yugi and his friends reach Duelist Kingdom, Pegasus announces that there are many strange secrets on the island which will make his ultimate tournament unlike any they’ve ever had. But when Weevil begins to use these mysterious new rules against Yugi in a duel, Yugi must not only figure the rules out, but master them if he’s to survive!

After Yugi defeats Weevil's first wave of Duel Monsters, he’s shocked to discover that Weevil has one last trick up his sleeve; a ravenous Great Moth that grows in power with every turn! Can Yugi find a way to destroy this winged beast before it destroys him?

Joey searches for a dueling opponent he stands a chance of beating when he finds himself courageously accepting a challenge from veteran duelist, Mai. But when Mai begins to demonstrate an unnerving psychic-like ability, Joey becomes totally flustered, leaving him no choice but to figure out Mai’s secret strategy before falling victim to it!

The fisherman duelist Mako, the master of the Sea Deck, baits Yugi into a duel on his own Sea playing field for a home field advantage. Can Yugi adapt to these new settings to turn the tide of battle?

If Yugi is eliminated from the tournament, Kaiba Corporation’s crooked Board of Directors will transfer control of the company from Kaiba to Pegasus! Kaiba's younger brother, Mokuba, challenges Yugi to a duel not only to protect his brother’s company but to regain their honor! Is Pegasus successfully manipulating possible allies against each other?

Yugi must duel a magical doppelgänger of Kaiba, created from the greed and power lust Yugi wiped from Kaiba's soul. But with his best cards resting at the bottom of the ocean, Yugi must discover a new strategy if he’s to survive fake Kaiba's powerful Blue Eyes White Dragon!

Yugi defeats the Blue Eyes White Dragon, but there are two more waiting in the wings! Will the real Kaiba reach Yugi in time to help beat this impersonator?

Joey decides to battle Rex Raptor without his friends’ help to prove that he is man enough to take care of Serenity on his own. But as Rex Raptor destroys Joey’s best Duel Monsters, will Tristan’s card remind him that with his friends he is never alone in battle?

Joey duels valiantly, but Rex Raptor has unleashed his secret weapon: the Red Eyes Black Dragon! Joey must figure out the secret of the card Yugi’s gift, the Time Wizard card, without Yugi’s help or he’s taking the next boat out of the Duelist Kingdom!

Yugi's classmate Bakura, possessed by his Millennium Ring’s dark powers, traps Yugi and his friends in a Shadow Game where they become the cards themselves! Not only must Yugi battle to avoid becoming a permanent part of the card game, but also free Bakura's soul from the Millennium Ring’s control!

Pegasus’s hired duelist Panik cheats Mai of all her star chips, and Yugi vows to defeat him and win them back. But when Panik's Castle of Dark Illusions enshrouds his monsters in a black mist, how can Yugi defeat an enemy he cannot see?

Despite his astonishing disadvantage, Yugi boldly provokes Panik - “I’ll finish you in three turns.” Is Yugi bluffing, or does he have the advantage in this battle of wits?

Kaiba descends to the kingdom to face Pegasus. Has Kaiba changed since his battle with Yugi, or is he still the same merciless duelist? A battle between Kaiba's Blue Eyes White Dragon and Joey's Red Eyes Black Dragon holds the answers!

The #1 American duelist Bandit Keith's gang kidnaps Joey to a secret cave with a Graveyard playing field. As Yugi and friends search for him, Joey faces Bandit Keith’s zombie monsters which become stronger as they return from the grave. Joey is all alone in the battle this time!

Joey’s last ditch effort, his lucky Time Wizrad card, fails against Bandit Keith's zombie monsters. But as his lucky streak comes to an end, will his improving skills as a duelist and his love for his sister inspire him to victory?

Trapped in the labyrinth cave, Yugi and friends find an alternate exit, but the door is guarded by Pegasus’s Paradox Brothers. Yugi and Joey will no longer be battling solo. They must band together in a team battle against the Paradox Brothers. The battle for all the star chips and entrance to Pegasus’s castle is on the line!

Yugi and Joey pool their strengths and manage to fend off their opponents’ monsters, but things are about to change as the Paradox Brothers summon the almighty Gate Guardian, a monster that reflects all attacks. Is Joey helping Yugi in this duel, or his lack of experience sealing their fate for defeat?