
A shy high-school student named Yugi Moto receives the fragmented pieces of an Egyptian artifact, known as the Millennium Puzzle, from his grandfather. When Yugi reassembles the puzzle he is possessed by the 3,000-year-old spirit of an ancient pharaoh. Yugi and his friends Joey, Tea and Hondo protect the puzzle, which contains powerful secrets many people would like to possess.
Kaiba kidnaps Yugi's grandfather to get a rare card.
Yugi loses his grandpa's soul to Duel Monsters creator, Maximillion Pegasus.
Yugi helps Joey board the boat for Duelist Kingdom to save his sister's eyes.
Once Yugi and his friends reach Duelist Kingdom, Pegasus announces that there are many strange secrets on the island; Weevil begins to use mysterious new rules against Yugi in a duel and Yugi must figure the rules out and master them to survive.