One night, the protagonist—a lonely university student—is awakened by a sound in his room and encounters a horrifying sight: a spider’s legs. Soon, an enigmatic creature appears in his life—beautiful like a doll, yet non-verbal, and gradually invades his daily life, silent but omnipresent in his room. At the same time, a series of grotesque serial murders are inciting fear across the city. Are these crimes connected to the mysterious "monster" that has taken strange occupancy in the protagonist’s home...?