Yi Jaewon-Yun was a lecherous, tyrannical king. Hated by all since his ascension to the throne, it seemed nothing could topple him.

Until one day, he fell in love with a female servant with a brown birthmark on her left cheek. A lady with a boy's name: Yoon Youngjae. But their happiness was cut short when she was killed by the Queen's jealousy, poisoned and cursed.

Despondent, Yi Jaewon-Yun wandered the world, hoping to one day be reunited with the woman that had his heart. And that day came. Except the Youngjae he once loved was no longer a She but a He.