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.

Horror, Mystery

Leon Lai, Eric Tsang Chi-Wai, Eugenia Yuan, Ting-Fung Li, Lau Tsz-Wing, John Shum Kin-Fun