1930s, Jiangxi Soviet Area. Jiang Mengzi bids farewell to his newlywed wife Xiang Wu'er and joins the main force of the Red Army on the Long March. Xiao Zhenkui, the leader of the "Communist Removal Group", took the opportunity to return to the countryside to launch a white terror. Mengzi's father, chairman of the Township Soviet, and his sister were killed at the same time. The pregnant Wu'er gave birth to a child on the way to escape. Wu'er is found out hiding and forced to work as a wet nurse. Will Mengzi return in time to save his family?

An episode from the life of a metallurgical plant collective. Lu Zhong-kui, an advanced worker appointed as head of the smelting shop, initiates the re-equipment of the open-hearth furnace. The plant director and some specialists warn him that the furnace, built by Americans, is operating at maximum capacity. However, many refer to the experience of the Soviet people and support Lu. And then an accident occurs: steel bursts out of the furnace... This episode is full of drama, as is the entire story about the selfless and persistent struggle of a worker-promoter to fulfill the state plan.