A case of a girl's death due to drug use has aroused the interest of criminal policeman Lao Guo (played by Cai Zhennan). After some investigation, Lao Guo locked the suspect on Lai Chunchun (played by Fang Siyu), the girlfriend of his rookie partner (played by Huang Jianwei). However, Lao Guo's stubbornness in pursuing the case sometimes makes him lose patience and take extreme measures, which obviously slows down the progress of the case. However, before Lao Guo can prepare all the evidence, under pressure from the media, his superiors hope that Lao Guo will close the case as soon as possible. At this time, Lao Guo's only son (played by Wen Shenghao) also began to express his incomprehension of his father's desperate behavior. Coupled with the obstruction of his partner everywhere, Lao Guo fell into a dilemma. With the appearance of betel nut beauty Xiaowen (played by Zheng Yinong), Lao Guo is faced with the torture of his conscience again. Because Xiaowen's father was the prisoner he illegally forced to confess. Facing the daughter of his enemy, Lao Guo hopes to maintain fairness and justice through the law on the one hand, and on the other hand, he hopes to pay off the debts for the mistakes he made that year, hoping to win Xiaowen's forgiveness and gain redemption...