Body puzzle tells the tragic and increasingly morbid story of the lovely widow Tracy (Gorky Park's Joanna Pacula). Not only has her famous pianist husband Abe died in an auto accident, but someone keeps breaking into her house and leaving severed body parts lying around.

Soon after Ji-won gets a new cell phone, her friend's young daughter, Yeong-ju, puts it to her ear and immediately begins screaming in terror. When other strange things start happening in connection with the phone, Ji-Won does some investigating and discovers that of the people before her who had the same number, almost all of them died suddenly under unusual circumstances. As Yeong-ju's behavior becomes increasingly alarming, Ji-won digs deeper into the circumstances surrounding the disappearance of the number's first owner, a high school girl named Jin-hie.

Kristel's dad died in a brutal car accident following an argument the two had on her prom night. Racked with guilt, Kristel takes some high school friends to a museum, located in an old abandoned mine, in hopes of retrieving the manuscript her father was writing about eighteenth and nineteenth century serial killers. Her dad was particularly interested in Andries Martiens, a man sentenced to death for slaughtering several youths. Martiens died in a massive explosion centuries ago, but it's rumored his spirit still haunts the mine and is ravenously hungry for another Slaughter night.