On the day when the country is lost, when the common man draws his sword. The young jailer Jiang Ni used his mortal body to kill gods.
The human race is declining, the demon race is respected, and the "monster slayer" has been reduced from a hero to a criminal. The jailer who can be bullied by everyone has the blood of the strongest demon-suppressing king flowing in his body. From repairing one's own body (mortal body), to gaining the power to slay demons, to leading the world's "demon slayers", and finally subverting the "Wei River Alliance".