At the start of the year, a heating furnace explodes at the steel mill. In the emergency meeting room, the deputy factory director is carried in, unconscious from drink, while Minister Zhang Zefeng struggles to contain his fury. While inspecting the ruins, He Yuzhong notices a string of suspicious details and concludes that the explosion was no accident, but deliberate sabotage.
The special task force interrogates all twelve employees on duty that night, but their statements fit together perfectly, bringing the investigation to a standstill. Just as it hits a dead end, He Yuzhong suddenly remembers a young man who was taken to the hospital. He may be the key to solving the case. He sets off at once, driving through the night to the hospital in search of the truth behind the explosion.
