The Last Guardian of a Doomed Humanity

When the apocalypse devastated Earth, Alan Clifford gave up his own lifespan to protect humanity in an underground bunker for 30 years. Just as peace seems within reach, Alan is shattered by betrayal from his adopted daughter, Cindy, and Chelsea Mason. They fabricate false footage of the surface, igniting mass hysteria and condemning Alan to death. Misled, humanity destroys the bunker and rushes outside—only to be caught in a brutal trap laid by giants. Now armed with advanced mecha technology, Alan faces a dire choice: risk everything to save the very people who betrayed him or let humanity fall.