Twelve-year-old Hai Wa sends a secret letter containing Japanese military information to the Eight Route Army during the anti-Japanese war.

Based on the novel "Mother" by Maxim Gorky, about the hardships of a peasant laborer.

The story of fifteen-year-old shepherd Gu Xiao, who ran away from his landlord to the mountains. There he met scouts from the People's Liberation Army and helped them find the right path. The shepherd then took part in an important combat operation. For his courage and resourcefulness, Gu Xiao was enlisted into the ranks of the soldiers at the request of the company.