Water Tower by James W. Morris
The Water Nation is in chaos. Citizens of the Water Nation are not quite themselves these days. Madness is everywhere and the residents are split into violent factions. Brother turns on brother and the Hubs they call their homes are being destroyed. What is going on? Fifteen-year-old Sam Cutter has every intention of finding out. It doesn't matter that it hasn't been more than a day since Sam fought against the New Power in their assault against the Sky Nation. When one of the world's five eternal royals asks you for a favor, you don't turn them down. Besides, when has Sam ever avoided a fight? His friends know all too well that when he's around, crazy things just seem to happen. But in a world of forces struggling for control and domination, a trouble-magnet like Sam might be exactly what's needed. Join Sam again as he heads to the Water Nation on the bottom of the ocean. Sometimes all it takes is one brave, determined, and somewhat awkward kid to stand up to powers far beyond the ordinary, whether they be good or evil. Good and evil is just a matter of opinion anyway.