A traffic accident separated Fu Yunfan from Yizhou for ten years. Ten years later, one is a criminal police officer who investigates the case, and the other is a suspect. The two meet in an intricate case, and the process of uncovering the truth is full of twists and turns. How does Fu Yunfan solve the mystery? Their relationship has gone from youth to sweetness, to life and death, and has gone through various tests.