After a series of incidents, Yuma and Astral learn of the existence of a "Number Hunter". Astral remains wary of an unseen presence, but Yuma pretends not to care. As a result, a series of strange phenomena appear around these two. Undeniably, these are the signs of the coming of the "Number Hunter" named Kaito Tenjo. At that moment, a dangerous Duel with the Numbers cards on the line begins. With Kaito's power far beyond their reckoning, what can Astral or Yuma possibly do?