On rainy nights in the bustling city, evil quietly breeds. Female forensic doctor Su Yao, relying on her meticulous observation of corpses and professional forensic knowledge, can always find out the truth of the case from clues. Criminal police captain Chen Yu has keen insight and courageous action, and he can unravel complex clues.
A murder on a rainy night broke their originally relatively peaceful work rhythm. A body was abandoned in an alley. The whole body was covered with strange injuries. No valid fingerprints or obvious traces of a fight were left at the scene. The only clue was a piece of paper soaked in rain and blurred in the hand of the deceased. As the investigation deepened, they discovered that this case was inextricably linked to a series of unsolved cases many years ago, and there seemed to be a huge and mysterious organization hidden behind it.
In the process of tracing the truth, Su Yao and Chen Yu encountered many obstacles. The mysterious person continued to cause interference, trying to bring the case to a deadlock again, and some people within the police station also questioned the direction of their investigation. However, Su Yao and Chen Yu never gave up. They trusted each other and cooperated closely. With their persistent pursuit of justice, they persisted in every rainy night and never let go of any detail. Every discovery Su Yao made on the autopsy table pointed the way for Chen Yu's investigation; and the clues Chen Yu obtained while running around provided new ideas for Su Yao's forensic identification. In the danger and fog, they gradually uncovered the tip of the iceberg of this mysterious organization, and a thrilling battle between good and evil began.
