As their final confrontation as rivals was reaching its conclusion, an interdimensional warp gate opened unexpectedly, sending Red and Blue hurtling through space and time. Upon awakening, they found themselves on a sandy beach, washed up on the shores of an island in the middle of the ocean. They soon discover that they are not alone, and to make matters even more complicated, they come to the realization that they aren't even in their own world anymore. On top of that, their companions are no longer at their side. With no other options, Red and Blue must learn to survive in the new world, and to do that, they must learn to play a game that bears striking similarities to Pokémon battling... Duel Monsters.
The long-awaited moment has arrived! All the students of the Remnant academies are gathered in Beacon to participate in the Vytal Festival tournament! Each household in the world stares at their screen, devouring each fight in the tournament with their gaze, without suspecting the disaster that is about to occur ...