Mayumi Doujima, a second-year student at Yubiwa Private Academy, is a girl on the hunt for a star that can only be seen once in every ten years. But it turns out that the “Pretty Boy Detectives Club”—a mysterious, non-profit organization that is rumored to secretly solve trouble on campus—has decided to help Mayumi search for the star. These five vivacious pretty boys send her reeling, and set the stage for days of risky adventure!