Childhood sweethearts become married, and childhood sweethearts grow old. Love that goes both ways makes people yearn for it. Shen Yue and Xu Yishen have known each other since they were young. They live in the same building, but they are not familiar with each other. When Shen Yue was lost when he was a child, he was found by a neighbor boy and carried back to his parents. The relationship between the two gradually improved. The girl had an unrequited love for the boy, and the boy waited for the girl to grow up and marry her. After Shen Yue and her two little sisters graduated from high school, they each embarked on different paths in life. Some were happy and some were worried.
