Haiqiao (played by Lai Ya-Yen) was born into a wealthy family. Her father, Hemingway (played by Wang Dao), was the owner of six jewelry stores. Mingwei had two wives. His concubine, Zhang Yamei (played by Di Ying), was a troublemaker. Fortunately, Haiqiao's biological mother, Li Tie (played by Liu Ruiqi), was a very wise person who had the ability to calm down various family problems. She was known as "Iron Mother". When Haiqiao was a child, she encountered a major earthquake and was trapped in the rubble. Fortunately, a teenager rescued her. Haiqiao was deeply impressed by the teenager and hoped to meet him again one day. Many years later, Haiqiao returned from studying abroad and graduated with first-class honors. Despite the opposition of her father Mingwei, she resolutely applied for the police academy with her sister Hai Hanzi (played by Lin Ketong). Haiqiao met the instructor Gao Cang (played by Lu Siming) in the police academy. Cang was capable and shrewd, hated evil, and could sacrifice his future for justice. What surprised Haiqiao was that Cang was the teenager who saved her. However, Gao Cang was shot before, leaving an inextricable bullet in his body. The bullet continuously releases lead poison, which is slowly eating away his life. Cang was shot that year because of his superior Lin Qiushui (played by Fan Guangyao), a senior police officer with a mean character who is best at taking credit for his subordinates' achievements. In order to uphold justice, Gao Cang leads Haiqiao, Hanzi and Liang Shuang (played by Lin Youwei) and other team members. They constantly clash with Qiushui internally and challenge the powerful externally without fear. Finally, they solve many major cases that have shocked Taiwan, including the "serial killer case" and the "mute girl rape case"... In the process, Haiqiao and Gao Cang support each other and their feelings grow day by day. However, Gao Cang's life is coming to an end. In the last days, Hai Qiao and Gao Cang, who know and love each other, continue to fight against criminals. The biggest enemy is Gao Cang's good brother for many years, the newly emerging gangster "Brother Jingcai"... In fact, Brother Jingcai (played by Wang Chuanyi) is not of high seniority in the underworld, but because he is bad, cruel and awesome enough, even the big brothers of high seniority will not mess with him, because if this person doesn't mess with you, you are already blessed... Taiwan is more beautiful as the night goes on, and people are more depraved as they are happier. How will the dying Gao Cang and Hai Qiao fight against the criminals to the end...