Tu Hau is a common woman from a fishing village whose husband has gone away to fight in the revolution. She takes care of her young daughter as well as her aging father-in-law. Soon, her peaceful village is attacked.
Vietnamese guerrillas move into a village adjoining a French/US airstrip and recruit locals to help them bring it down.
The conflict between a group of workers and the manager as they struggle to maximize the production in a cement factory in the 60s