Commissioned by the Empress, Di Renjie, Li Yuanfang, Yang Jian, and Bian Que formed the Canyon Major Case Unit to uphold order in the King's Canyon. However, bizarre cases kept emerging one after another, with Li Yuanfang and Yang Jian even being innocently attacked by the Tyrant until they fell into a coma. The truth seemed uncovered yet remained shrouded in mystery. After Li Yuanfang and Yang Jian safely awoke, the unit appeared to return to its stable daily routine. But beneath the surface of the canyon, undercurrents surged ceaselessly, and the shadowy conspiracy remained unclear. With the enemy hidden and themselves exposed, how will Di Renjie lead the team to break through the deadlock?