Why bother fighting spectral foes like all the other exorcists when you can just eat them? Straight A student Eugene Korekishi doesn't believe in ghosts...but his classmate Mogari Shishikuno is an exorcist who swallows them whole! Mogari can't see ghosts on his own, but once he and Eugene meet someone with the sight, there's only one path left--form an exorcist club at school and embark on anything but a normal high school life! Wanting to start their club activities in earnest, the Phantom Busters plan to post flyers around the school to advertise the exorcism services they provide, but first they have to get the idea past the student council president, who is a stone-cold nonbeliever! Meanwhile, the assassin dispatched from Mount Shishikuno to kill Mogari makes his way to town...