"People Are Vanishing Down."
A young girl is kidnapped by a serial killer. The serial killer uses manholes to kidnap and kill his victims. The young girl's older sister tries to save her before it's too late.

Yeon-seo
Soo-jung
Soo-chul
Kim Jong-ho
Pil-gyu
Kim Song-yi
Soo-chul (Young)
Female Victim
Policeman
Bakery Part-time Worker
Social Worker
Yeon-seo's Mother