The "Fugui Villa" in Ping'an Town is the residence of the "Hundreds of Brothers", the largest gang in the arena. The three elders who are eager to retire not only interrupted their living expenses in order to train their children Lin Taiping (played by Yang Jue), Wang Dong (played by Sun Yizhou), and Yan Qi (played by Lan Yingying) as successors, but also tried to accelerate the growth of their children by creating problems. Unexpectedly, the civilian knight Guo Dalu (played by Bai Ke) who came out halfway disrupted their plans. He made friends with the three young knights, opened a martial arts hall, a newspaper, a troupe, a detective agency... Not only did he become poorer and poorer, but he also attracted opponents to take advantage of the situation... At the same time, the four young knights also had to face problems such as internal unity, hostile forces, and love disputes. Gradually, they had the ability to make a living, sympathized with each other, and their love relationships also blossomed... When the three elders decided to pass the position of elder to the three young knights, the young knights refused. They feel that people who bring joy to themselves and others in ordinary times are also heroes. The play is adapted from Gu Long's novel of the same name.