Jirawat Santaratchai

Khao Niao, a young girl, is left at her relatives' house by her mother. Although she is surrounded by familiar faces, she still feels very lonely and blames her mother for 'abandoning' her here. One day, while wandering around, Khao Niao finds a stray puppy.

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.