After moving into her first apartment, Sayaka invites her friends to come over and celebrate. During the party, she begins acting strangely, before suddenly running to the balcony and jumping to her death. At the funeral, stunned and horrified, her friends and family refuse to believe Sayaka committed suicide. Her sister Mariko begins investigating and learns that Sayaka wasn’t the first to plummet to her death in Apartment 1303. The room has a shocking history and Mariko is about to come face-to-face with an evil more powerful and terrifying than she could ever have imagined.