On the wedding day, there was a storm. On the lake, Xiao Beiming, the best detective of Daqi, was framed as a demonic Night Fury and fled into the lake on the charge of murdering his master and treason. Three years later, Xiao Beiming 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.