Synopsis：When the apocalypse struck, Alan Clifford traded away his lifespan to hide humanity in an underground bunker for 30 years. Just as the surface seems safe again, he’s betrayed by his adopted daughter Cindy Clifford and Chelsea Mason, who forge fake footage, rile up the crowd, and send him to the gallows. Trusting their lies, humanity destroys the bunker and charges to the surface—only to walk straight into a giant’s ambush. As the slaughter begins, Alan, now a master of mecha technology, must choose whether to save them yet again or let them face the consequences of their betrayal.