An Early Autumn Day.

Duong and Tho are two military intelligence officers tasked with investigating enemy positions. They arrive in a rural area and meet Kien, a guerrilla fighter. Kien's wife, who deeply loves her husband, fears that if he continues his activities, he will be targeted by terrorists, leading to the destruction of their family's happiness. For this reason, she tries to stop her husband and clashes with Tho.