Mangkorn Praken

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.

Mona's mother died, seemingly from spontaneous human combustion. She became acquainted with a nurse named Ploy, whose mother also died from the same cause. The two women embark on a quest to find out the truths about their mothers' death with the aid of an ambitious news reporter.