The alien giant that devours stars breaks through the sky, and the fate of the earth is at stake. Humans are forced to live in underground cities. Unwilling to live like ants, humans have spent twenty years creating the ultimate weapon to fight back against the giants. But before the day of the decisive battle, the giants have sensed the crisis in advance, and the human underground city has been destroyed. The only chance to fight back is now in the hands of a young man who hates humans. Can he let go of his hatred and save humanity...