Xiao Erdong, a young man with a congenital disease but a "marathon dream", Xiao Daming, a taxi driver who stubbornly forced his son to preview the "life of the blind", father and son who do not understand each other, But in a marathon, they "exchanged identities" and stood side by side on the starting line
Wang Yanhui
Zhang Youhao
Gong Beibi
Li Jun Hao
He Nan
