Prince Pietro is the half-human, half-dragon prince of the kingdom of Popolocrois. After the evil GamiGami tries to take over the Kingdom, a mysterious girl named Hyuu appears, which is the beginning of an adventure for Pietro.

Long long ago, in the time of the courageous, the knights and magic, there was a country by the name of Popolocrois in which the people live peacefully. King Paul is a kind-hearted man who entered into a marriage with one of the daughters of the Ryu clan, Sania, in order to overcome the barriers between the different races. The Queen soon gave birth to a child, Prince Pietro, who will play a significant role in bridging the gap between the humans and the Ryu clan.—ANN