The year is 945 AD, the current King of Goryeo Hyejong is at his last limb of health. Despite his efforts of choosing a new ruler, a familiar face rears just in time to conquer. Jeongjong returns after two years to finally get back what he always desired, the throne of Goryeo. Not taking defeat twice, he ends his brothers life mercilessly to make his hostile takeover, while taking the greatest hostage, Court Lady Hae Soo. He saw her take the heart of those around her, and knowing the affect she had the new king decided it would be best to keep her close, allowing other to follow his every command by making her his personal toy. Hae Soo was an orphan of the Hae clan who rose in the ranks of the palace over the teenage years of her life. Wise beyond her years, she uses her position to help shape of how the kingdom should be. Now, with the lost of a beloved king in turn for a ruthless one, she knew she had to play her cards rights. Along this path, she see whose loyalties lies in the right place. Within their turbulent relationship from a young age, it as a wonder the king decided to keep her in position, that is until he unveils his plan for her. First being despondent, she soon realizes just how much of a gift it was seeing now that she has a chance to change the future of her country. In the battle of wits against a vengeful king and a court lady, follow their journey of power, passion and political treachery. Hae Soo now has the fate of a country in her hands, being the Queen of Goryeo and the king's ultimate possession. Based on the k-drama series Moon Lovers Scarlet Heart Ryeo Highest Ranking #23 in thriller