​Celty hasn't been seen in Ikebukuro for some time, but her influence remains strong. After being treated like a monster in his hometown, Yahiro Mizuchi has come to Tokyo in hopes of meeting another so-called monster. Meanwhile, Kuon Kotonami wants to turn the Headless Rider into a moneymaker. As for Himeka Tatsugami, her sister vanished after trying to write an article on the urban legend. To make matters worse, some longtime residents of Ikebukuro have been disappearing from the city's streets. When the new trio begins attending Raira Academy, another set of strange adventures begins...