For third-year high school student Koyomi Araragi, finding answers means untangling his past alongside the mysteries of the present. His girlfriend, Hitagi Senjougahara, helps him navigate these questions. Among the events he must reckon with is an encounter with oddity specialist Izuko Gaen, after which he awakens in an empty, unfamiliar void and is greeted by a familiar face.
His search brings him back into contact with the eccentric transfer student Ougi Oshino, who presents an unexpected proposal. Meanwhile, Araragi investigates the mystery surrounding an apparition, uncovering a truth that was not meant to come to light.
