Plot: Kim Tae-hyun is a talented surgeon. Desperate for money to pay for his sister's medical bills, he adopts the code name Yong-pal and offers his medical skills to those in need of medical attention but who cannot do so publicly, dealing with criminals and corrupt plutocrats. Joining a team of corrupt physicians Kim rescues "sleeping beauty" Han Yeo-jin, a chaebol heiress, from a medically induced coma, leading to unintended consequences.