Reaper

High above the sunken remains of the world lays the tomb of a nation, the long forgotten underlands of the island, settled by the ancient, survivalist soldiers of Reaper. The dust has long settled on this world locked away from the surface, but fifteen year old brothers Derek and James Nite seem to possess a connection to the Vema through their father, Issaic. When the brothers are thrown under earth on an adventure with their newfound allies, Lynn Lyre and Heather Denien, they are for the first time confronted by the consequences of their parents actions, the vastness of the island, and the meaning of what it means to be a team. If they ever want to see the sun again, they will have to learn the true meaning of sacrifice, and quick. But the Vempire is only the second of the four island nations. And Reaper is just the beginning.