Nida is a single mother who takes care of her anti-social son who has locked himself in his room for five years. The only way to communicate with her son is to write on a piece of paper and slip it under the door. But, when outsiders start to get curious about what is going on behind the door of her son's room, a series of terrible events starts to happen.
Sinjai Plengpanich
as Nida
Kanya Rattanapetch
as Parn
Teerapong Liaorakwong
as Wirach
Khomapat Attaya
as Professor Sunee
Pongpitch Preechaborisuthikul
as Dome
Chatsoroth Thanuthipayakul
as Oat
Patipan Supsawatdichot
as Young Ton
Salina Rattana
as Young Parn
Parinda Pinitchana
as Anong
Thananop Bhalbulaya
as Natee