Famous mystery writer Li and her boyfriend Ding live in an upscale area. A creepy woman rings their doorbell grinning wickedly. Despite Ding's reluctance to move, Li investigates the strange occurrences.

A famous mystery authoress Li lives in an upscale residential quarter with her white-collar elite boyfriend Ding. Ding was married once but the wife disappeared mysteriously five years ago. The doorbell rings one day, the couple watch through door viewer and see a horrific woman standing outside with wicked smiles. After Ding's rejection on moving, Li decides to explore the reason behind the strange events.