Highschooler Akino loves her schoolmate Okada, but Okada has a girlfriend called Nacchan. While Akino is busy being jealous of Nacchan to the point of becoming obsessed with her, she realizes that she is more fascinated by Nacchan than Okada.
Upon rescuing a friend who is being held captive by a wicked classmate and his gang of bullies, 11-year-olds Tetsushi, Yuusuke, and Ryoji unexpectedly find themselves entwined in a supernatural battle against the forces of hell. Armed with courage, wit, and three magical charms given to them by a mysterious hermit, they set out to thwart the evil in a quest, which takes them to the depths of hell and brings them to a final battle with the god of death himself.
