Saito High is renowned for its spiritual entities and its principal's obsession with collecting occult items. The school is protected by members of the Holy Student Council who were chosen by prophecy. However, the council's president, Haruto Houjo, possesses a supernatural ability to summon spirits that constantly disrupts his desire for a normal life. The second council member, Kazumi Ryodo, is skilled in being possessed and harbors feelings for Hanako while the last member, Mutsuki Asahina, has a fascination with exorcism and a curious interest in young boys. Despite their personal struggles, the trio carries the heavy responsibility of maintaining order in the school and safeguarding the world against paranormal threats, which often leads to amusing mishaps.