某晚，在一幢房子内传出儿童的惨叫声。受警界朋友所托，精神科医生克利（亚赖特爱华 饰）受命前往调查，他发现小女孩小蕾的身上留有明显伤痕，然而小蕾和她的母亲英恩（麦察蓉普拉 饰）都声称系魔鬼所为。克利希望带走小蕾进行全面检查，但是英恩却坚决不配合，生怕孩子被他人当作疯子看待。 　　无奈之下，克利只得时常上门问诊。一来二去，他和这个年轻性感的独身女子陷入热恋之中。而也就在这一过程中，他逐渐了解到这个家庭背后所隐藏的黑暗秘密……When the police investigate reports of a little girl screaming hysterically in an apartment, they find landlady Ingorn (Mai Charoenpura) moving in with her 7 year old daughter, Pear. The daughter appears to have a mental condition but it also bruised all over her body. Suspecting abuse, they send the two to a psychiatrist over the mother's objections. This is the first time for Krid (Ananda Everingham) to meet with Ingorn and her daughter, Pear. During the therapy, Ingorn mentions her daughter's paranoid delusion, while Pear claims that she is possessed by a spirit of a boy who haunts and hurt her. From the fact the Pear is in the same age as Krid's son, Krid feels a deep connection with her but the more he bonds with Ingorn's family, the more he senses something eerie about the house where the mother and daughter live.