A lone wolf who was expelled from the military for failing to observe military discipline is traveling around the world. While traveling in Syria, he suddenly heard a burst of assault rifle shooting. He was sensitive and recognized that it was the Type 95 assault rifle unique to China. When he learned that the Chinese military was hunting the leader of the largest drug trafficking group in the country, Lone Wolf assisted the military in capturing the leader. He thought he would resume his military status and continue his military career when he returned to China, but he was inexplicably assigned to work as a bodyguard for the chairman's daughter Ren Feifei at Huaxing Company. Reluctantly, he began a seemingly easy but not easy urban life.