The newly appointed detective Dao Yichang (Aarif Lee) was ordered to judge a case, and accidentally rescued Tie Qingting (Ni Ni), a female disciple of the underworld organization "Wu Yin Men" who was proficient in the art of "Qi Men Dun Jia". Tie Qingting was entrusted by the sect boss (Wu Bai) to investigate the mysterious traces of alien objects. When everyone was defeated, the second brother Zhuge Qingyun (Da Peng) returned with a mysterious girl Xiao Yuanquan (Zhou Dongyu), and said that this person was the new leader. Tie Qingting and Zhuge Qingyun fell into a grudge. On the other hand, the boss and the elders of several other sects also started fighting for the artifact. Because of the arrival of the "alien visitor", the major sects hunted down Wu Yin Men. Because Xiao Yuanquan's life experience was unknown, there were constant disputes within the sect. Seeing that the enemy was in front of them, the battle between good and evil was about to break out, and a catastrophe of heaven and earth was about to come...