In a world spiraling into chaos, legendary knights rise to confront the darkness. Will they become gods of war or saviors of the planet? Three Portriss Knights and a lone human boy now stand as the last line of defense. On the Portriss Planet, where robots live in peace, that tranquility is shattered by the sudden arrival of the tyrant Dark Portriss. He seeks infinite power through a “Space‑time Destroying Cannon,” and only the Portriss Knights can stop him. The story follows Yuuma, a boy who accidentally enters the Portriss world, as he and the Knights embark on a perilous adventure to protect their realm.