July 7th 1981. Inspector Ma raids a ceremony of the worshippers of Carla, as they are about to sacrifice a young girl. Ma shoots the witch, but she places a blood curse on his family.
July 1985. Ma is now wheelchair-bound, and his family begins to suffer. Younger sister and photojournalist Mimi begins to see the witch, and even photographs her. Younger brother and cop Tse Ah Chiu (yes, that's his name) doesn't believe in ghosts ... at first.
Then two child ghosts come for Ma's young daughter Siu Yuk. She calls them "brother and sister E T".......