Using Cynthia to break the ice seal, the Overdevil finally revived, freezing everything and starting to advance to Yapan in the east. In order to save Cynthia, Gaynor is challenging himself with a special training that exceeds his own limits, while the Kids, who also want to help Cynthia, agree to lend their power to the ceiling of Yapan. All the energy in the roof of Japan was connected to the kids' private train, Chernobog.