Suddenly, Buddy Police Instructor Count Dawn comes out of a strange coffin which lands in front of Gao and his friends. Count Dawn strictly says that “A child can’t handle the duties of a Buddy Police.” Meanwhile, a Hundred Demon named ‘Twin-Headed Hellhound, Orthros’ appears at Aibo Academy. The students start to fight each other because of the smoke let out by Orthros. While thinking of a solution, Gao is suddenly interrupted by Death Shido who seems different then usual. Gao must prove himself to Count Dawn in order to gain his trust.