Once upon a time, in the far away kingdom where stay the King with his Queen in the Castle. With the happy and loving life, they both have been gifted with a son, the heir of the kingdom in the future. They name the baby - Prince Jaejoong. When the prince growing to age of 8, the queen pregnant again. To complete the happy and perfect family, the baby princess came to their life –Princess Hana.

The happy moment not always stay long. As the leader of the great kingdom, the king always faces with the challenges and war from others who wants to take over his throne.

Nero, one of the greatest enemies of the King has kidnapped the one year old Princess to take revenge of the death of his father. He swears to make the King suffered to lose the beloved one by killing the princess instead.

In order to survive the kingdom and the future king, King Jung sacrifices his princess over the prince. He protects Prince Jaejoong by scarifying Princess Hana.