Ching, a Hong Kong police officer, has been experiencing the same nightmare about a woman being tied to an
inverted cross and having her heart dug out. During a hostage situation, she kills the armed suspect despite having never fired a gun before, and sees later that the suspect was standing next to a dead woman hanging on an inverted cross. As she is knowledgeable about religious symbols, Ching is invited to join her colleagues Nam and Ka-ming in investigating the case, which is seemingly connected to a recent series of murders. All the evidence from the crime scenes – ranging from verses in the
Book of Revelation written in blood to the inverted cross – suggests that a
Satanic cult is involved. Judas,
Satan's messenger, is responsible for the murders and he is searching everywhere in Hong Kong for his master's daughter, who was born on 6 June 1969. The police send three undercover policewomen to lure Judas out, but they fail to arrest him. Ching has visions of her long-lost father, who had abandoned her in her childhood, and hears from Judas that she is Satan's daughter. Nam and Ka-ming are assigned to protect Ching from Judas, but they are no match for him as he has supernatural powers. In the early hours of 6 June 1996, Judas kidnaps Ching and takes her to the rooftop of a tall building, where he intends to carry out a ritual to take out her heart. If she survives, then she is Satan's daughter. Nam and Ka-ming come to save Ching and fight Judas. Nam kills Judas after using a
nail gun to impale him on a cross and set him on fire; the burning cross falls off the rooftop and lands on a van. Just as it reaches 6 a.m., Ching tests whether she is really Satan's daughter by digging out her heart. She survives and shows her heart to Ka-ming, who screams. While the van burns in the background,
Revelation 20:7:8 appears on the screen before the credits roll. == Cast ==