Li Yang, who was abandoned by his parents, and Mu Tinghe, who was in trouble at home, were rescued by the policeman Li Chaoming. They met again many years later. Li Yang did not remember Mu Tinghe, but when he saw Li Yang again, Mu Tinghe was attracted by her bright and tenacious and fell in love with her. He has been waiting for her silently for many years. However, he was born in a complicated environment since childhood. Mu Tinghe is young but cold and deep, which makes people afraid to approach, including Li Yang. Li Yang's best friend Qiang Cheng, who is upright and kind-hearted, became a policeman as he wished. The special nature of the profession and Li Yang's tragic experience have become an unbridgeable gap between them. This is a regret in Qiang Cheng's heart, but what is even more regrettable is that he became a policeman but watched Li Yang die in front of him to save himself.
