Four orphaned boys grow up under the care of Topapa, a priest in the secluded village of Ur, unaware of their destined role in a much larger conflict. When the Wind Crystal—an artifact long safeguarded by their community—mysteriously sinks beneath the earth, the youths venture into the depths to recover it. Upon discovering the sunken crystal in the cavern below, they receive a startling revelation: the relic speaks to them, imparting knowledge that they have been chosen for a grand quest that extends far beyond their remote village and threatens the fate of the entire world.