Ray and Saki, two young individuals, bid farewell to the grand St. Hainheratsu Theological School in Europe as they embark on a mission to eradicate vampires worldwide from Japan. While Saki eagerly anticipates reuniting with his family after a prolonged absence, Rei perceives an impending threat lurking nearby. As Saki's innocence makes him susceptible, his loved ones become the vampires' prime objective, setting the stage for a chilling and ominous trap.