2.Cherry: Cherry, the young backbone of Gexi Group, personally picked out Thunder and brought it into the organization of Caesar Group.
3. Yang: Yang, Gan and Xiong used to be the iron triangle of the police academy, which was also one of the reasons why Gan was punished.
4. Bear: Gan and Yang were once the iron triangle of the police academy.
5. Synopsis: Yan, Yang and Xiong were once the iron triangle of the police academy. Gan was punished for hurting Yang in a fight. After leaving the police academy, he went south to make a living and was taken into the group by the young backbone of Caesar Group. Gan got to know the undercover police, and was instructed by them to become the informant of Tai Yongfeng, and made many brilliant achievements. He was specially approved by the provincial office to become a policeman. Gan fell into a coma when Su Ling detonated a bomb while performing the task of collecting nets for Caesar Group. Eight years later, Gan woke up in the hospital, but lost his memory. Caesar's case has not been solved because of insufficient evidence, and the memory of thunder in the sky has become the only key to unlock the secret. With the awakening of Gan, Caesar Group and Tan family revived. Tai Yongfeng realized that there was a problem and decided to let Gan pursue it. Gan gradually recovered his memory and got the key information. In the end, through the efforts of the police, all the criminals of Caesar and Tan family were arrested, but Yang died heroically. After attending Yang's memorial service, Gan embarked on a new journey to find out the international criminal organization behind Caesar.