In a big world where the practice of magic is the mainstream, Lang Qingqing, who has always set the goal of being a god-level magician in life, has a physique that excludes magic. In order to realize his dream, he resolutely chose the seemingly pitiful, but actually happy path of lying down. While under the guise of protecting the contracted female mage, he captures the heart of the other party. But his obscene behavior was jealous of his peers. In the end, he was forced to become the Diligent Emperor and had no choice but to practice hard and kill his comrades.