Jiang Chen, a modern young man, traveled to the parallel Ming Dynasty where martial arts was prevalent, and became a powerless low-level Jin Yiwei. He encountered a fatal betrayal at the beginning. His immediate superior colluded with demons from the demon sect, and even betrayed his subordinates to become blood slaves for the demon sect. At the moment of life and death, Jiang Chen awakened the Spirit Fox System and relied on the blessing of the system to make a comeback. From then on, Jiang Chen, as a royal guard, dealt with the turbulent politics of the court, eradicating corruption in the officialdom, uncovering traitors in the court, and confronting powerful officials and traitors. At the same time, Jiang Chen traveled around the world, suppressing the remnants of the demon sect, killing masters of various evil ways, and subduing thousand-year-old demons. He repeatedly solved strange cases and performed extraordinary feats, completely changing his original destiny as cannon fodder.