Hae-Rim, a 35-year-old woman, finds a job at a hospital as an assistant nurse assigned to Chul-Oh, a quadriplegic VIP patient who practically owns the hospital. For the past 10 years, his son Sang-woo has been desperately keeping him alive to obtain his father's wealth, ordering doctor Hyuk-Gyu to perform several heart transplants despite recurrent heart failures.
In need of another heart, Sang-woo chooses this time as a donor a brain dead unidentified woman, brought into the hospital from a mysterious accident.
In exchange for money, Sang-woo asks Hae-Rim to look into the woman's background, seeking to receive the approval of her family for organ transplant. As Hae-rim needs the money she's offered, she agrees. She then discovers that the woman called Mi-Na was once a prostitute known as ‘Madonna’, who has experienced a lifetime of abuse, and that she is pregnant. In an attempt to save Madonna’s unborn child, Hye-rim goes against Sang-woo’s orders and searches for the baby’s father.