A-Jen (Maggie Shiu), who works as a waitress in a bar, has a family of three that is poor but stable. However, after experiencing an unbearable atrocity, A-Jen accidentally becomes pregnant. A-Jen plans to have an abortion on her own, but the result backfires, and the family also experiences a serious car accident. Over the years, A-Jen's family's life is back on track, but her husband A-Ming (Kenny Wong), who has a grudge, has never had a good impression of her daughter Lucy (Joey Leung), who once brought bloodshed to the family. It is Lucy's birthday, and A-Jen buys a puppy as a gift for her daughter. That night, the puppy suddenly ran out of the room and dug out a strange and weird jar in the wild. Lucy opened the jar without knowing what was good for her, but she was often disturbed by terrible hallucinations and strange events afterwards. The terrible events intensified, and the peaceful life was completely pushed into the abyss...