Legendary soldier Caleb activates the Bunker Survival System as the apocalypse strikes. He builds a mechanical farm on Sunset Hills using a welder and modified harvester. While humanity battles zombies and starvation, Caleb feasts in his bulletproof greenhouse growing antiviral wheat. He stockpiles supplies, raises walls, and recruits survivors. The farm transforms into a steel fortress defended by heavy cannons and powerful mechs.
