The town of Domori may be plagued by mysterious phenomena, but things are not going well for Class 5-3's new homeroom teacher Meisuke Nueno, either. Right from the start, Nueno, or "Nube" for short, becomes the target of fifth-grader Hiroshi's bursts of rage. After witnessing something bizarre, Nueno suspects there may be an otherworldly reason behind Hiroshi's sudden personality change.