Who The Devil Is summary: Jiao Xifan, the leader of an underground organisation was betrayed, prompting him to fake his own death. Assuming the guise of a student, he started to investigate events from over a decade ago to unravel the truth. Jiao Xifan's quest for truth takes an unexpected turn as he fell into a trap unbeknownst to him when he befriended his classmate, Xue Zhi.