A psychopath's ruthless serial murders have left the entire nation gripped with fear and chaos. A honest and justice-seeking rookie police officer and a veteran detective with tragic past, face against the killer. After the encounter with the psychopath, their lives totally change.

• Lee Seung-gi
• Lee Hee-jun
• Park Ju-hyun
• Kwon Hwa-woon
• Kyung Soo-jin
• Woo Ji-hyeon
• Jo Jae-yun
• Kim Young-jae