The film begins with the discovery of decomposed body parts washing ashore in Macau, prompting an investigation led by tenacious police officer Lee. The clues lead the authorities to "The Eight Immortals Restaurant," operated by the disturbingly eccentric owner Wong Chi Hang. As the police delve into Wong's unsettling past and strange behavior, they uncover a series of mysterious disappearances connected to the restaurant. Evidence points to the possibility that Wong may be engaged in sinister activities far beyond his public persona as a quirky restauranteur. Officer Lee becomes convinced that Wong's peculiar demeanor hides a terrifying secret, driving the investigation forward.

Simultaneously, flashbacks reveal Wong's chilling descent into madness and violence, amplifying the suspense and painting a horrifying picture of what might have happened to the missing individuals. As the tension escalates, the narrative exposes Wong’s sinister tactics, creating a foreboding atmosphere that entraps both the characters and the audience in a web of horror and mystery. The slow, methodical pace of the investigation contrasts sharply with the brutal acts depicted in Wong's past, creating a disturbing juxtaposition that raises pressing questions about human nature and evil. The story twists into dark territories, promising a relentless conclusion that merges mystery with ghastly revelations.