A talented doctor travels over 150 years back in time to when the powerful Joseon dynasty ruled over Korea, and uses his skills to save lives in this intriguing fantasy drama. Dr. Jin Hyuk, the 21st century’s best neurosurgeon meets an unidentified patient and passes out while in despair over an accident that his lover Mina has had. As he wakes up, he's suddenly transported to the time of the Joseon Dynasty. When a plague strikes Joseon, Hyuk treats the dying people and makes a new resolution with Yi Ha Eung, who dreams of the reform of Joseon. But Jin Hyuk hesitates to study and practice medicine to out of fear that he might change history forever. Follow the trials and triumphs of this traveling doctor who ends up in the wrong place at the wrong time.