Following the 1911 Xinhai Revolution that overthrew the Qing dynasty, China entered a period of turmoil, with drastic political changes and the start of the Warlord Era. Chen Zhen has been hiding in Foshan until he receives a message and decides to return to Shanghai. Upon his return, Chen sees that a brothel now stands on the old location of Jingwu School. Apart from having to shoulder the heavy responsibilities of rebuilding Jingwu and raising Huo Yuan Jia's orphaned son, Huo Dong Jue, Chen runs into trouble with the gangs and has to hide from the police.

　“辛亥革命”推翻了满清统治，人们以为天下从此太平，可以过上安乐的日子，然而，总统交替，军阀混战，段祺瑞政府更是不顾民众反对，在接受了日本的500万“西原借款”后对德宣战，一时间民愤滔天，全国各地游行示威不断，在这样的乱世之中，一直遭日本通缉的陈真在佛山接到电报，毅然返回上海，立誓重振精武门。