Xiaoxiao is a county teacher. Her childhood dream was to marry Brother Bing. When she grew up, she got her wish and found Li Qiang, a soldier. Although they lived in different places, they had a deep relationship. In the middle of the journey, Li Qiang disappeared for several years because he needed to complete the "mysterious mission" of the army. Xiaoxiao gave birth to a child alone. After many years, Li Qiang returned and continued to express his feelings for his family and country...