Crystal of Atlantis

Years ago, a visitor from another world foresaw doom for a certain civilization on Earth. To save its people, he gave them a child to be raised among them, hoping his knowledge and insight would be enough to save them from their fate.

As time passes, everyone can see there is something special about the child named Tristan. He grows up into a strong young man and saves his people from a deadly flood. Soon he is on the path to becoming their leader, and he sees great things in their future.