Strange things happen inside Room No. 9 of the high-security women’s prison. Eulji Hae Yi is a ruthless lawyer who wins all of her cases. She goes to meet with Jang Hwa Sa, who is on death row for an infamous case of poisoning serial murders. Inside Room No. 9 of the high-security women’s prison, the souls of Hae Yi and Hwa Sa change bodies. Does psychiatrist Gi Yoo Jin, who is Hae Yi’s boyfriend, somehow hold the key to the women returning to their own bodies?
희대의 악녀 사형수 장화사와 운명이 바뀐 안하무인 변호사 을지해이, 그리고 운명의 열쇠를 쥔 남자 기유진의 인생리셋 복수극