The protagonist Bai Shu and his mother depend on each other. When Bai Shu goes out, his mother encounters an assassin. The police officer in charge of the case, Yu Qi, takes Bai Shu in. After Bai Shu is admitted to the police academy, he works with Yu Qi to investigate his mother's death. Together with Yu Qi, he punishes all the sinners in society.
Purpose: If you encounter bad things in reality, you should go to the police uncle. Maybe there will be your Yuqi.