Prince Jungwon, prince of Ashyn. He was... A dragon. But could transform into a human at any time. Well, ten years ago, he was saved by a young girl in his dragon form.

Now, he was married. To that girl. She was 20, he was 25. Well, as a prince, he needs an heir. But he has to be careful. Those giving birth to baby Draconians can die.

His late brother, the king, had found a lady who bore him a child. But, he had died.

Since it's hard to get pregnant and not die, the lady will be Princess.