The discovery of a mysterious body unravels a tangled criminal web. Criminal police captain Xu Muchen and forensic doctor Lin Weiran teamed up to investigate this seemingly ordinary case, but unexpectedly involved an old case and an unsolved serial murder case. As the investigation deepens, they discover that there is a huge transnational criminal organization hidden behind the case, involving underground transactions, gang forces, political and business collusion, and even high-level police officials may be involved in the case.
