Meridian City is alone in the ocean. Roughly thirty miles from the surface there is no one or thing to help them. Despite the overwhelming odds, the city has thrived in the dark. But things change when a crack is discovered in the dome protecting them from annihilation. Now Simon has to find the source of the problem as he and his team are the only thing standing between the city and the crushing depths of the ocean. But the abyss is always watching. Always waiting.