On his wedding day, elite detective Xiao Beiming is framed for murder and treason. Years later, he returns and teams up with allies to uncover a sinister conspiracy while clearing his name.

On the day of the wedding, Xiao Beiming, the best detective in Daqi, was framed as a demonic Night Fury on the Fengbo Lake, and fled into the lake on the charge of murdering his master and treason. Three years later, Xiao Beifu returned to the capital and gained the trust of his junior sister Zhong Xueman. In the darkness, he and a group of witty and courageous partners used their lives as bait to fight for death. They jointly solved several strange cases, uncovered the truth about the Night Evil, and put down the evil spirit. Daqi turmoil protects all people in the world.