1959, IP Man (Donnie Yen) and Zhang Yongcheng (Xiong Dailin) sent their eldest son Ye Zhun back to Guangdong, and their children cotyledon continued to study in Hong Kong. During the struggle with the gang led by Ma Jingsheng (Tan Yaowen) and his boss (Tai Sen), Ye Wen led his disciples to defend the primary school, and got to know Zhang Tianzhi (Max Zhang) and appreciated each other. They made a living by pulling carts and fighting in underground casinos. However, at this time, Zhang Tianzhi, who claimed to be the "authentic Wing Chun Boxing", publicly declared war on Ip Man, striving for fame for his newly-opened martial arts school.