Sora needs a new training ground to prepare for his Mark of Mastery exam retake, King Mickey sends him, Donald, and Goofy to a new world for such a task, but will it be another world in danger?
Sora and Donald arrive at Canterlot High to search for a magical disturbance by the order of King Mickey, But when they get there, they get more than they bargained for.
In Yu-Gi-Oh! Zexal, it was said that Don Thousand and Vector together created a million Barian, or Fake, Numbers and only very few were shown. This is where some of the others went.