(I know the name of the story should be Hunt for Celestia but Hunt for Celestia was meant to be the overall name for all the adventures in the other worlds)

Beerus returns to Equestria and chooses his first two game pieces Twilight and Fluttershy. When they arrive at the Duellist Universe Tournament, they find they'll have to learn a new game and they're in with some of the best duellists the game ever produced. If they fail to advance, they'll lose their one chance to save the first hostage, Discord. Then disaster strikes!