A murder without a perpetrator, a death that leads to layers of puzzles.
In 1993, a manslaughter case of a middle school student occurred in Misheng City. Six years later, on the third day after prisoner Xi Mochu was released from prison, former witness Su Weiyuan died in a community park. Just when Xi Mochu was locked up as a suspect, new clues led to an old case four years ago. Then more and more people fell into a carefully laid out situation, and the organizer was hidden among them.
