Mei Shiqi, a junior guard in the Yu Chaoyin Health Department, longs for a promotion and an increase in salary to achieve freedom in marriage. During the investigation, she encountered the sinister and sinister Inspector Sicheng Leng Moyan. The two suspected each other and restricted each other while investigating the case, causing a lot of ups and downs and thrilling oolongs. After encountering many life-and-death situations and mutual support, they gradually began to trust each other. The two worked together sincerely to track down the real culprit of the crime that endangered national security and the safety of the country. During the battle of wits and courage with the mastermind behind the scenes, the two fell in love and killed each other, and finally determined that the other person was the love of their lives. The two are in different classes and have different secrets and missions. However, in the face of the life decisions of punishing rape and eradicating evil, and making major decisions about right and wrong, they are able to highly integrate their personal happiness with national security and social security, and they show an admirable performance. Wisdom, courage, responsibility and other noble qualities of outstanding young people.