Five hundred years ago, Master Tianxuan sealed the Demon King in exchange for his prosperity. The good times did not last long, however, and the originally peaceful city of Guiyuan was full of monsters and cholera returned. To protect justice and peace, young demon catchers are eager to try. Qianye Yudao, dreamed of becoming the world’s first monster catcher, stood out from the crowd: and Yuan Xianyi, dressed as a man, did not know each other. An adventure journey and an unknown secret that shook the sky.