A cop and his son move into a worn-down apartment building. The boy is first menaced by a neighbor girl and then goes missing. The father tries to look for him by knocking on the neighbor girl's door but finds that no girl lives there.
as Yu Fai
as Chan Kwok-wai
as Hai'er
as Cheung
as Yu's daughter
as Photographer
as Pathologist
as Janitor
as Doctor
