Ma Lan (Qin Yi), who was born in the city, was unwilling to be a mediocre housewife and determined to take part in the surging socialist construction. Her parents did not agree with her plans, but she resolutely goes to the construction site. There others look at her strangely, but Ma Lan does not care. The master Hu Agen looks down on women, dismissing Ma Lan, who decides to learn to drive a loader. Even in secret if she must.
In the spring of 1949, a war is about to happen between the Liberation Army and Kuomintang Army on the Yangtze River. The Liberation Army dispatches a reconnaissance to scout the southern parts of the River, whose work is actually full of hardships and dangers. However, with the help of the local crowd and the guerrillas, finally, the members of the reconnaissance succeed in the commission and offer valuable information to the Liberation Army, making great contributions in the war.
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?