In the old Jing Dynasty, evil spirits and monsters run rampant, and the Xuan Qing Wei was established to monitor the world, eliminate villains, and uphold righteousness. Shen Hao, after being transported to this world, spent four years climbing from a common soldier to a minor officer in the Xuan Qing Wei. However, with his background, it is almost impossible for him to advance further. One day, he suddenly discovers a dragon inside his body, a progenitor of ten thousand dragons that feeds on the souls and spirits of immortals! Every time he slays an enemy, this dragon emerges to guide him in devouring the enemy's soul or demon core, and his cultivation rapidly advances. ... Shen Hao: I just handle cases, how did I become invincible?