The Cicadas Still Chirp

Twelve years ago, a robbery case resulted in the death of Lin Feng, the then criminal police captain, and the case became an unsolved case. Twelve years later, Captain Lin's daughter Lin Yao re-investigated the case. At the same time, two skeletons were found on the outskirts of the city. The place where the skeletons were found was exactly where the robbers had hidden twelve years ago. Is it a coincidence? Or a trap? Can this mystery that has been fettered for twelve years be solved...