In an era where bonding with a mystical beast is essential, every person must awaken their own unique creature. Our hero faces humiliation when his life force is stolen, awakening merely an F-grade orange tabby cat. Yet, he possesses an extraordinary SSS-grade evolution talent that can transform his beast beyond expectations. His tabby grows exponentially in strength and evolves into a stunning catgirl, unlocking god-tier Devour ability. With his humanoid beasts, the protagonist sets out on a path of thrilling conquest and retribution. He outmaneuvers jealous foes, dominates beast tournaments, and steadily rises to become the top beastmaster.