The Great Tree of Gelendor is living on borrowed time. To keep the sacred wonder alive, Sylas and the others must continue to find the elemental stones of power before it's too late. The Stone of Air is rumored to be hidden in one of the world's most ancient structures: a temple built by the original Kings themselves, dedicated to the first King, Zephyr. In order to get there, Sylas and his companions must cross a mysterious lake, enter a forbidden...