Young artist Shen Yi's life changes when a commission leads to a police case gone wrong. Seven years later, he joins the Criminal Investigation Unit as a portraitist alongside Captain Du Cheng.
The rape and murder suspect dies in the interrogation room due to being beaten up by the crowd earlier. The three teams responsible for this case are also imprisoned together, while the other suspect is still at large. After being released from prison, the three teams, led by their captain Cheng, track down their whereabouts. They pursue the culprit for twelve years.
Seventeen-year-old Cheng Miaomiao and sixteen-year-old Cheng Yayao were born in the Lin Qi Oil Field, where their family has worked for three generations. In the late 1990s, the family relocates from the Northwest to the coastal town of Heping, where they must navigate their new environment and face challenges that foster personal growth.
