The Granstream Saga

Many years ago, the Allied Spirit Army fought the malevolent Imperial Wizardry in a prolonged war. Neither side could gain the upper hand until the Imperial Wizardry designed a weapon with too much destructive power. Causing the planet's axis to shift, the deployment of the weapon resulted in the melting of polar ice, which led to 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.