A female corpse leads to new clues in an unsolved case, and an old case is reopened. Criminal psychology professor Jin Yanxi is parachuted into the task force to shock policewoman Li Qingqiu. Professor Jin was once a provincial police officer, and the investigation pointed directly at her childhood sweetheart. The three people who were trapped in a low life due to an old case are entangled again. Whether they can break through the many secrets and traps to find out the truth and heal their loved ones is the most difficult mystery of fate.
