In the year 2157, as rising oceans consume the world, engineer Dr. Evelyn Reed leads humanity’s final gamble—Project Horizon, a colossal network of self-healing tidal walls meant to hold back the sea. Battling storms, sabotage, and the ghosts of forgotten technologies, Evelyn races against time to save civilization. But as the oceans rise faster than expected, one truth becomes clear: building the wall is only the beginning—the true salvation may lie beyond the Earth itself.