Min Ji-Won suffers from amnesia caused by an accident almost a year ago. After the accident, Min Ji-Won is a shy person. Prior to the accident, Min Ji-Won was the leader of a gang of four girl bullies. Through pictures, Min Ji-Won learns about the three other members and she wants to learn what happened to them. While Min Ji-Won attempts to unravel the mystery, her former friends are killed one by one.
김하늘
as Min Ji-won
류진
as Park Jun-ho
남상미
as Su-in
전혜빈
as Eun-seo
신이
as Mi-kyoung
Jeon Hie-Ju
as Yu-jung
Lee Yoo-Ji
as Eun-jung
기주봉
as Detective 1
김해숙
as Ji-won's Mother
