The series "Poong, the Joseon Psychiatrist" is a Korean detective comedy about a royal "spirit healer". During the reign of the Joseon dynasty, a psychiatrist named Se Yeong serves at the court of the crown prince. He helps the future ruler fight for the throne and deal with his internal problems. In recognition of his services, the king awards him the honorary medical title of "Divine Needle". However, soon His Majesty is found dead. The man was poisoned, and one of the main suspects becomes the doctor of his son.