The Suzuha Amanosuzu Organization is going to hold a party on Sunday. Baku and Kuguru are excited about it, but Gao says that he has Buddy Police work throughout the day. "We don’t even have free time to eat Takoyaki…" Both Drum and Gao complain. Suddenly, the splitting image of Suzuha’s robots appear in front of them and they head to the Castle to see Suzuha. "Surely Suzuha appeared…" They thought. But they see a Hundred Demon possessing her. The shadow of Mysterious Dekarabia is floating near her. Gao and Drum fall into a Dungeon Stage and are forced to fight 1024 fights.