After dying in an unexpected accident, a medical drama addict wakes up to find herself inhabiting the body of a doctor. Armed with nothing but secondhand knowledge from years of watching medical shows, she is thrown into a brutal world of primitive medicine. Her situation worsens when she becomes the personal physician to Jin, the powerful leader of a rebel army who is destined to die in three months. Surrounded by reckless doctors and deadly practices, she must defy fate and her own lack of training to keep her patient alive.