He saves lives and tries to earn an extra buck every time. That's Tae Hyun, who also goes by Yong Pal at night. He treats VIP chaebol heirs in his day job in the hospital and treats criminals who need a second chance in life at night. He comes across a patient who is held captive in a VIP room named Yeo Jin. His initial urge to help her out leads him to have her as a source of income. After their business with each other, love seems to have filled the air. He doesn't get immediately how much trouble would come with loving Yeo Jin, an heiress of a hospital. The dispute leads to many deaths on their way, and they also fall in and out of love while at it. It seems like they would risk their lives for each other, but loyalties can change when family and money are now at stake.