On a mysterious continent, an amnesiac boy washes ashore. After kindhearted people rescue him, he begins searching for the truth. Who am I? Where am I? Where did I come from? Where should I go? Carrying all these questions with him, the boy sets out on his journey. He gazes at the empty blue sky above the mountain peaks. He experiences a life that seems peaceful on the surface, but is full of hidden intrigue beneath. He witnesses with his own eyes the people struggling to survive in the desert. He is astonished by city-states where money reigns supreme. He travels through kingdoms buried in snow and ice, and gallops across boundless grasslands. In the end, he returns to that sacred land and chooses to fulfill his mission. The tower that reaches into the clouds still stands tall, bearing witness to the world's endless changes as it watches over the people awaiting salvation...