Once upon a time, there was a tiny little kingdom hidden in the valley. They have everything they need, so no one has ever left this valley except Prince Caelus. He keeps wondering about life outside of the valley. He usually goes to the highest peak of the valley and tries to gaze through the fog river that covers the mountains that surround him.One night, when Prince Caelus was sitting on the highest peak, he noticed something in the sky. In front of that beautiful full moon, there is a gor...