The unknown species from outer space, who call themselves "the Heavenly Beings" have invaded. Ogong is set free, ready for war. Battle after battle, Ogong is becoming more harmonized with his mecha, Monkey Overlord, and their fighting ability keeps on improving. Ogong feels his instinct, waking up the God of Destruction inside him, which was sealed after his last battle before being imprisoned. Monkey Overlord tries to dominate Ogong's body, to fully transform as the God of Destruction! Can Ogong save the world from the Heavenly Beings, while keeping his rationality?