Synopsis：As doomsday strikes, Alex sacrifices the rest of his life to protect humanity, keeping survivors safe in an underground bunker for 30 years. But his adopted daughter Evelyn and the cunning Diana betray him, forging a peaceful-surface video to incite the crowd and send Alex to the gallows. Bewitched by the illusion of a “new oasis,” the survivors destroy the bunker themselves, unaware it’s a killing trap set by Diana and the Giants. When the Giants descend and the massacre begins, regret comes too late. Now, with a secret ultimate mecha in his hands, will Alex abandon his hatred and choose to save humanity one last time?