In the wake of China's open-door policy in the early 1980's, Fujian was one of the first Chinese coastal provinces to be opened to the outside world. Many of the male residents opted to go abroad for work, leaving behind their wives and families. Two decades later, Fujian is a microcosm of Chinese modernity: there are palatial suburbs populated by lonely "remittance widows"; neon-lit discotheques frequented by karaoke kids; coastal villages inhabited by impoverished fishermen and city centers dominated by gangs, snakeheads and language schools acting as fronts for organized human trafficking.

In the beginning of times, humans and demons existed side by side in peace. Thousands of years later, the master of Youli clan violently launched a war to expel mankind. After hardships, the strange men and strangers expelled them to the depths of the earth and suppressed them with the Qianyuan Immortal Formation. The former head of the Ping You Division, Yi Shui Han, guides the half-human, half-Yuli to gather the Five Noble Ones to reorganize the division. After the human skin case, the emperor also ordered to reopen the Department of Peace and Harmony to find out the truth.