When the #1 ranked duelist and ruthless tycoon, Seto Kaiba, kidnaps Yugi's Grandpa to get the rare Blue-Eyes White Dragon card, Yugi must face Kaiba in the ultimate Duel Monsters showdown!

Yugi is forced to face Duel Monsters creator, Maximillion Pegasus, in the mysterious Shadow Realm where all the monsters and magic are real. If Yugi loses, Pegasus claims Grandpa's soul as his prize!

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, the cheat Weevil tries to cripple Yugi's deck by tossing his best cards overboard!

Pegasus announces that there are many strange secrets that will make his ultimate tournament unlike any they've ever had. 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!

Joey finds himself courageously accepting a challenge from veteran duelist, Mai. But when Mai begins to demonstrate an unnerving psychic ability, Joey has to figure out Mai's secret strategy before falling victim to it!