Gan Tianlei, Xiong Guoliang, and Yang Xiaolei were once the iron triangle of the police academy. Gan Tianlei was punished for helping Yang Xiaolei in a fight and wounding someone. After leaving the police academy, he went south to seek a living. He was spotted by Che Lizi, a young backbone of the Caesar Group, and was brought into the group. Gan Tianlei met police undercover Shi Xiaohai (Uncle Hai), and was inspired by him to become Tai Yongfeng's informant. He repeatedly made extraordinary achievements and was specially approved by the provincial department to become a policeman. While carrying out the task of closing the net against the Caesar Group, Gan Tianlei fell into a coma after Suling detonated the bomb. Eight years later, Gan Tianlei woke up in the hospital but lost his memory.
