In the far future, Duel Monsters has taken a turn. Duelists no longer use the Fusion, Synchro, and Xyz Monsters due to them being forbidden from the game. Everyone now duels with green colored monster cards called Zeo Monsters. Yuko, the main hero, learns of the forbidden cards as he and his friends battle against The Legion, a organization who wants to shape the world into their own kingdom by using the forces of Water, Fire, Wind, Earth, and Chaos to destroy the current world. (The characters, story, and Zeo Monsters are all made up by me, so there shouldn't be any Copyright issues. Other than these things EVERYTHING belongs to the People who created Yu-Gi-Oh. If there are any issues you see throughout the story please tell me, so I can fix it.)

Xerus has been defeated and peace has returned to the world, that is until a new Battle City Tournament is announced. Duelist from all over the world have gathered to claim the title of the 'New King of Games'. Yuko, his friends, and a newcomer named Koji have all entered. Everything goes as planned until the finals.

Years after the saving of 4 dimensions, Yuya is now all grown up and is happily married to his childhood friend Zuzu and has a 12 year old son named Yuno. But a new threat has arrived with the sole purpose of destroying the Standard Dimension. It's now up to Yuno and his friends to defeat this threat and bring peace and happiness back to the Standard Dimension.