Dongxiang has less land and more people, so Dongxiang people dress up as grain harvesters. During the double harvest season, people from Dongxiang will go to Xixiang to dress up as grain harvesters after finishing their own harvest. Ni Cai is a simple and simple young man from Dongxiang. Due to family changes, he has no choice but to come to Xixiang to work in Xixiang with the dongxiang clowns. It was the season when the Japanese invaders were requisitioning grain. In order to prevent the grain from falling into the hands of the Japanese invaders, the Xixiang people, led by "Xiao Zhuge", a Communist Party member and underground liaison officer of the New Fourth Army's Xiangbei detachment, launched a heroic and tenacious struggle to seize grain from the Japanese invaders. Nicai met Zhang's sister-in-law Guixiang and fell in love with each other while working as a grain helper at Zhang's house and fighting against the Japanese invaders. But their love was interfered by the forces of custom and destroyed by the evil forces of the traitors. During the struggle to seize grain, Ni Cai was arrested and imprisoned by the traitor and bully Zhao Zhentian on the charge of "collaborating with the Communist Party" and was about to be escorted to the Japanese gendarmerie in the county seat. In order to understand and rescue Ni Cai, Guixiang climbed mountains and waded through rivers, and finally found the Xiangbei Detachment of the New Fourth Army. With the support and help of villagers such as He Lao and Zhang's wife, the Xiangbei Detachment suppressed the traitorous bullies Zhao Zhentian and Zhao Decai and rescued Ni Cai. Finally, the two lovers joined the New Fourth Army without hesitation and embarked on the revolutionary road of resisting Japan and saving the country.