Synopsis: Eulji Hae Yi (Kim Hee Sun) is a ruthless lawyer who flatters people who hold power and despises the poor. She makes every effort to win the case, hoping to be promoted to a senior partner in the firm. One day, Hae Yi meets with Jang Hwa Sa (Kim Hae Sook), a woman convicted to death penalty. In the visiting room No. 9 of the high-security women’s prison, their bodies exchange. Meanwhile, Hae Yi’s boyfriend Ki Yoo Jin (Kim Young Kwang), a family doctor who appears to be a good person, holds the key to the two women returning to their own bodies.