In the snowy countryside of northern China, Wen receives a telegram informing her that her father is dead. She travels to the city and finds he was branded a reactionary in the midst of the Cultural Revolution. She is distraught, and on the way home, she is harassed and attacked by thugs, but she stays in the home of a kind-hearted doctor.
Zhou Mingying, a worker at a power plant in Northeast China, united her fellow workers under the leadership of the Party, overcame all difficulties, demonstrated a high degree of creativity, exposed the enemy's plots and sabotage, and quickly repaired the generators that had been damaged by the Kuomintang, ensuring the supply of electricity.
A guerrilla group led by Li Xiangyang are ambushed by the Japanese invasion army during the War of Resistance.
