Dr. Jin, the top surgeon in Korea in the 21st century, finds himself transported to the year 1860 in the Joseon kingdom. How does he treat patients without state-of-the-art medical equipment and only armed with knowledge of modern medicine? There is no medical equipment or medicine in the kingdom but he has to somehow find a way to treat ill patients. Time traveler Dr. Jin is a medical drama with actual doctors advising the drama production. To save lives, Dr. Jin resorts to building his own medical instruments and developing medicine to remake himself into a better doctor.