The surface is dead. Prime is all that remains. Powered by Nectar—a substance that can transform into anything—Prime has kept humanity alive beneath the waves. But when the same dark forces that destroyed the world above strike the city, survival becomes a race against time. The James family leads the defense, fighting to hold the city together as sabotage, invasion, and cosmic mysteries collide. If they fail, Prime will fall… and humanity with it. The final war for Earth begins underwater