A prosecutor on his last case deals with a colleague to exonerate a suspect, making the law just.

Prosecutor Han Ming (played by Lei Jiayin) is middle-aged, and he wanted to catch up with the last train of his life, but he was involved in a complicated case. Facing the stubborn prosecutor Lu Lingling (played by Ma Li), Han Ming started from the beginning. She was puzzled and flinched, and finally withstood the pressure together with her, turning the suspect's intentional injury into self-defense, and returning the law to fairness and justice.