In the Human World, Dr. Riddles, Sunbeam, Folgore and Kanchome are at the structures, investigating them. In the In-between World, Kiyo, Zatch, and Ponygon arrive at the castle. They begin infiltrating the castle forcefully by attacking the guards in their way. Maestro tells Brago that to open the human portal, he must burn Zatch's book. Sherry tells Brago how she will help him fight, but he tells her to go back to her room. Kiyo, Zatch, and Ponygon meet Brago while infiltrating the castle. The three battle Brago, and Ponygon is injured in the process. Kiyo and Zatch continue their battle against Brago. When Brago is about to deliver the finishing blow, they are saved by Maestro's shield spell. Zatch uses "Bao Zakeruga" to counter Brago's "Dioga Gravidon" which causes the portal to open. Maestro appears and tells them the portal to the Mamodo world has begun to open, and he plans to take revenge on it with the prisoners of the In-between World.