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Gan Tianlei, Xiong Guoliang and Yang Xiaolei were once the iron triangle of the police academy.Gan Tianlei was punished to help Yang Xiaolei get injured. After leaving the police academy, he went south to make a living. He was spotted by Chezi, a young backbone of the Caesar Group, and brought into the group.Gan Tianlei met Shi Xiaohai (Uncle Hai) undercover of the police. He was enlightened by him and became Tai Yongfeng's informant and made many great achievements. He was specially approved by the Provincial Department to become a policeman.While performing a closing mission against Caesar Group, Gan Tianlei fell into a coma due to Su Ling's detonation of the bomb.Eight years later, Gan Tianlei woke up in the hospital, but lost his memory.The Caesar case has not been solved due to insufficient evidence, and Gan Tianlei's memory has become the only key to unlocking the secret.With Gan Tianlei's awakening, the two major forces of the Caesar Group and the Tan family resurrected to commit crimes.Tai Yongfeng realized that something was wrong and decided to let Gan Tianlei investigate.Gan Tianlei gradually regained his memory and obtained key information.In the end, after police efforts, all the criminals of the two major gangs of Caesar and the Tan family were arrested.In order to find out the international sexual criminal organization behind Caesar, Gan Tianlei embarked on a new journey.