Gan Tianlei, Xiong Guoliang, and Yang Xiaolei were once the iron triangle of the police academy. Gan Tianlei was punished for fighting and injuring someone to help Yang Xiaolei. After leaving the police academy, he went south to make a living. He was spotted by the young backbone of the Caesar Group, Cherry, and brought into the group. Gan Tianlei met the police undercover Shi Xiaohai (Uncle Hai), and was enlightened by him. He became an informant of Tai Yongfeng and made remarkable achievements. He was approved by the provincial department to become a policeman. When carrying out the task of closing the net on the Caesar Group, Gan Tianlei fell into a coma because of Su Ling's bomb detonation. Eight years later, Gan Tianlei woke up in the hospital, but lost his memory.