A mother, father, and daughter of six year old was found dead in a house. Only the son Ryan, who was seven years old, survived . Since then Ryan suffered Post Traumatic Stress Disorder (PTSD) and was treated at mental hospital. His conditions was emotionally unstable and often had nightmares. Slowly, Ryan shut himself off and acted as if forgetting all the events.
Five years later comes Karina, a psychiatrist who is writing a master degree thesis and makes Ryan as an object of research. Although Ryan is considered normal and readily discharged, but Karina wants to do the last experiment . She wants to take Ryan back to his old house. Karina is a firm believer in the theory that the most effective way to cope with PTSD is to get the victim to the original location and has to learn to deal with situations that provoke the trauma.
Although many are concerned about this kind of treatment, Karina insists she can do it. If Ryan remain normal, then it means that Ryan has successfully face the trauma. Karina is skeptical when reminded by Bams, her friend, about the confession of Ryan at the beginning of the examination. It was a possible involvment of other creatures in the house that caused the deaths.
Inside the house, at first Ryan does show normal behavior, but day after day Ryan’s attitude changes. He becomes distant, mysterious and strange. His relationship with Karina flees away. When one night Ryan has nightmares and delirium, Karina mimic what his mom used to: sing the song Nina Bobo (Sleeps Nina).
The song ‘switchs on’ all things that are in the house. Something that made his family killed. And this time it threatens Karina’s life in order to finalize what had not been completed five years earlier.