Apart from his love for Won-gyeong, Bang-won ordered the death of the queen's younger siblings who were already political obstacles. Won-gyeong, although feeling bloody, tries to understand and accept Bang-won, the king of Joseon, rather than his personal feelings. However, he can never treat Bang-won with the same feelings as before. As Prince Seongnyeong dies together, the two regain their trust as a couple before becoming kings... The last task for them is to replace the crown prince.