Kati, a nine-year-old girl whose mother is suffering from an incurable illness. She must go through steps of happiness and sorrow, bonding and separation, having her hopes fulfilled and losing something she loves.
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.