"The family members that you see before you
Can hide a motive to kill that you cannot see."

On a stormy night, Wing Sze (Chan Man Wun) and her mother (Law Koon Lan) are celebrating her little brother's birthday, but a tragedy starts here...

Sze's uncle and auntie aren't very close to her, but after the tragedy, they come back from America to adopt her. Uncle Lap Chong (Dave Wong) and auntie Man Yee (Anne Heung) both have high-class jobs as Chong is a university lecturer and Yee is a doctor, Sze thinks that she can finally grow up in a normal environment.

One day, some familiar Cantonese Opera music floats from the dining room and frightens Sze as she remembers that her father (Liu Kai Chi) loved Cantonese Opera when he was alive. It turns out that her uncle is in the room, singing and drnking at the same time just like Sze's father used to do. The next morning, Sze tells Yee what she has seen, but Yee tells her that these are just the actions of the demons in her heart as she prescribes some tranquilisers for Sze. After this, Sze's hallucinations only increase. Eventually, Sze becomes suspicious and begs for help from psychologist Po Ling (Winnie Yeung) and social worker Ka Yin (Raymond Cho), but she doesn't gain their trust. She can only secretly go into her auntie and uncle's room where she finds out that... when Sze realises what is happening, rather than wait for her death, then why not...