In order to save his sick sister, Yang Yi, the former top strongman, hid in the streets and set up a stall to make a living. After accidentally meeting Ouyang Xue, the president of Ouyang Group, he was invited to serve as the security captain. During this period, Yang Yi successively defeated underground overlords, dandies, illegal traders and gangs, and also became friends with Li Ruoxi, President Assistant Su Qingyan and others. He resolved many crises along the way and successfully cured his sister. His legendary identity as the "World-Destroying Dragon" gradually became known to the world.
