Anti-drug policeman Yi Yongzheng was sent to investigate a drug case and reunited with an old friend. In order to save her son, Ding Zhitong joined a drug trafficking group and was attacked from all sides. Her husband also died because of her. Ding Zhitong thought about it and decided to hand over the evidence to Yi Yongzheng, but unfortunately her actions had already been seen through. After that, Ding Zhitong joined forces with Yi Yongzheng to wipe out the drug trafficking group, and she also accepted legal sanctions.