Crown Prince Sado spirals down due to his own insanity and his father King Yeongjo's complex.
Kim Dae-myung
Crown Prince Sado
Lee Hang-na
Yi Young-bin
Park So-dam
Princess Hwa-wan
Park Ha-na
Crown Prince Sado's wife
Kim Myung-gon
King Yeongjo
Jo Mi-ryung
middle-aged woman
