The Granstream Saga

The Allied Spirit Army fought a prolonged war against the malevolent Imperial Wizardry many years ago. The Imperial Wizardry designed a weapon with too much destructive power, causing the planet's axis to shift and resulting in a world-wide flood. Four wise men designed a mechanism that allowed the planet's four continents to float above the water. For generations, the secrets of maintaining the mechanism have been passed from the wise men to their descendants.

But now, the last of those are gone, and the planet begins to sink into the vast ocean. Eon is a young man who lives on the continent of Shilf with his foster father. One day, he discovers the powers of a magical orb he found when he was a child. Seeing these powers, Eon's foster father realizes that he might be connected to the wise men of the past.