Sara (Haruka Shimazaki) is cast to play a small role in a stage play directed by Gota Nishikino (Mantaro Koichi). Aoi (Riho Takada) and Kaori (Rika Adachi) are the lead actresses and they prepare hard every day. Then, a female staff member is found dead in the theater. Aoi falls down and loses consciousness. Sara is then picked to takeover her lead role.