On an ordinary and unremarkable day, ordinary high school student Xiaojun (played by Kenta Suga), along with Meixiang (played by Hoshika Seika) and Xiaowu (played by Roku Oeguri), is coerced by the domineering Zhuolang (played by Masaki Jinai) to an abandoned small building. They meet a classmate, Xiaohong (played by Seiya), who enjoys studying insects, at the entrance. Just as Zhuolang questions Xiaohong about why he is there, the big door of the building suddenly opens. Confused, Zhuolang and Meixiang enter the house, and the events that follow prompt Xiaojun and the others to follow in. Inside the eerie small building, Xiaojun encounters another classmate, Horiwaka Anna (played by Anna Iiyama), who had arrived earlier. The six of them find themselves trapped in the house, unable to escape, while something frightening seems to be lurking around in the empty house. They become targets of an unknown monster hunt... This film is adapted from the game of the same name.