Mayu (Elaiza Ikeda) is a psychology counselor at a hospital. She begins to counsel a girl (Himeka Himejima) who is protected by the police. The girl does not remember anything including her own name. Mysterious cases begins to take place around May. Meanwhile, Mayu's younger brother Kazuma (Hiroya Shimizu) is a YouTuber. He wants to get more viewers and decides to sneak into a burned down site where 5 people died.