Ah juan, an unknown person who came to Shanghai to work, agreed to represent the declining Chuanwu Boxing Gym to participate in the "Shanghai Fight Night" martial arts competition in order to earn money to treat his father's illness. To do so, he must overcome all the experts, prejudices, and himself.
李昕
as Ah Juan / Liu Jiajuan (voice)
Hao Guo
as Ah Gou / Liu Zhixiong / Xiao Zhangyang (voice)
Yexiong Chen
as Ah Mao / Liu Fujun (voice)
蔡欣然
as Xiao Yu / Wang Zhaoyu (voice)
王一郎
as Zhang Wate (voice)
阿杰
as Jin Muyang (voice)
唐睿
as Tang Rui (voice)
魏轩
as Wei Xuan (voice)
林簌
as Reporter Xu (voice)
Peng Bo
as Newspaper Office Chief (voice)
蔡壮壮
as Grandpa Li (voice)
王保权
as Fat Long (voice)
