Gan Tianlei, Yang Xiaolei, and Xiong Guoliang were once an inseparable trio at the police academy. Gan Tianlei was disciplined for getting into a fight and injuring someone on Yang Xiaolei's behalf. After leaving the academy, he headed south to make a living, where he caught the eye of Che Lizi, a young rising star at the Kaiser Group, and was brought into the organization. Gan Tianlei later met Uncle Hai, an undercover police officer, who helped him see the light. He became a contact for Tai Yongfeng and repeatedly distinguished himself, eventually receiving special approval from the provincial police department to become an officer.
Just as the police were about to move in on the Kaiser Group, Su Ling's appearance left Gan Tianlei stunned. With the operation imminent, Su Ling took a bullet for him, and was shot in the heart. Because of a bomb, she woke up five years later with amnesia, remembering nothing except her daughter and Gan Tianlei. The Kaiser case was far from over: the Kaiser Group and the Tan family, two major criminal forces, had resurfaced and resumed their crimes. Tai Yongfeng sensed something was amiss and decided to let Gan Tianlei investigate on his own. Gan Tianlei obtained crucial information. In the end, thanks to the police's efforts, all the criminals in the Kaiser and Tan family gangs were arrested. To uncover the international criminal organization behind Kaiser, Gan Tianlei embarked on a new mission.
