Duel Academy has the school trip to Domino City. It's the sanctuary duel place of Yugi Muto, Seto Kaiba, and others. Jaden and his friends visit Yugi's house and meet Grandpa. While walking into the town, Grandpa is kidnapped. Two assassins of The Society of Light, Thunder and Frost, chase after them and approach them into a tag duel. (thetvdb.com)