For an ordinary traffic accident case, criminal police officer Yang Yilin could have closed the case in two days. But he took another look - there was something wrong with the vehicle causing the accident, and the identity of the victim didn't make sense. He followed the clues to investigate, but the investigation became deeper and deeper: Jinyang Hotel hid ulterior secrets, there was someone behind the legal person behind the scenes, the girl who accompanied the bartender died unexpectedly, and key witnesses disappeared one after another. Then the judge disappeared and the captain died. Everyone is lying, everyone is afraid of something. Only then did Yang Yilin realize that what he was chasing was not a crime, but a dark network of relationships that had been tangled for many years. When the last piece of the puzzle came together, the truth appeared where he least expected to see it. From beginning to end, there was no winner in this case.