Ultimo and Vice are Karakuri Doji, the mechanical embodiment of pure good and pure evil, devoid of human emotions that can cloud one's judgement. Their purpose: to battle to the death to prove once and for all whether good or evil is the most powerful force in the universe.
Yamato's best friend Rune is now a doji master to the envious trickster Jealousy. But why is Rune using Jealousy to attack Yamato and Ultimo? The answer lies deep in the past and will shock everyone - even Rune! Plus, meet Murayama, a warrior with a prophecy that could spell some serious trouble for the entire world.