The Battle City Finals draw to a beginning with triple deception; Marik's servant, Odion, is assuming his name, Marik acts like a friend to Yugi and co. under the false identity of Namu, and Yami Bakura plans to enter with Bakura as his pawn. Yugi and the Pharaoh make the difficult decision to put Slifer in their deck, and enter the battle to save the world.