During a Turbo Duel alongside Jack Atlas and Crow Hogan, Yusei Fudo has his Stardust Dragon captured by Paradox—a mysterious Turbo Duelist from the future—who turns it into a Sin Monster. Empowered by the Crimson Dragon, Yusei pursues Paradox through a time slip and ends up in the past. There, Paradox duels Jaden Yuki, who still wields the powers of Yubel and the Supreme King. By this time, Paradox has also captured Cyber End Dragon and Rainbow Dragon, overwhelming Jaden. Yusei and the Crimson Dragon arrive to save him. Jaden explains Paradox's true goal: by stealing monsters from various eras and corrupting them, he intends to kill Maximillion Pegasus, the creator of Duel Monsters, thereby preventing the game's creation and erasing the events of all three series. Yusei and Jaden agree to chase Paradox into the past, leading them to meet the King of Games, Yugi Mutou. However, Paradox has already attacked that era, supposedly killing both Pegasus and Yugi's grandfather, and stolen Blue-Eyes White Dragon and Red-Eyes Black Dragon. After Yusei and Jaden explain the situation, Yugi joins them in a three-on-one duel against Paradox to free the trapped monsters and save the world—and time itself—before it is too late.