Long, long time ago, in Joseon era there was a kingdom named Boreumdal (Full Moon). The king and the queen lived in happy and peaceful life. They had three sons and all of them were handsome and good looking. No wonder because the parents were also inhumanly good looking. The three sons were Myunwol—the eldest who was as wise as his father, Sewol—the second son who was tall and freakingly handsome, he was as calm as river, and Jongwol—the youngest who was a little bit temperament and didn't talk much, but he was a lovely boy. As they got two sons, the king and the queen were very happy, but they felt that happiness was just incomplete. The king wanted to have a daughter to entertain him when he was sad. So, as they got Jongwol, they also got a daughter in the same time. They named her Moonwol.

However, the birth of the princess brought a curse to all kingdoms in Korea that time. They sent the king a petition to kill the baby because it would bring curses and they were afraid the curse would influence Korea's properity in the future. The king couldn't do that. He loved the baby so much as he loved himself, so he asked help from an old man he found in the deep deep forest who had a super power. In order to safe the only daughter of the kingdoms, the old man commanded to bring the baby to another era. The king and the queen had to agree although it was the hardest decision they had ever made.

Living as an ordinary girl in the orphanage in Yeosu, this princess had grown up well and prettily. In order to reach their dream, she and her friends, Minhwa, moved to Seoul—going to high school in Seoul. As she started living in the new city, her life changed. There were bad and good things happened in her life. Was it destined?