One day, when Dong Yang was on a business trip, he met a lost little boy "Beibei". While getting along with Beibei, his encounter reminded Dong Yang of a little girl in the alley when he was a child, her childhood best friend Xie Xiaotai, the neighbor's sister Lin Ruoxun who liked to take care of them, his grandmother who always loved to make all kinds of cakes for them, and what happened to him in the alley. The scenes of them were either ridiculous or heart-wrenching stories... Taking advantage of the vacation after a business trip, Dong Yang returned to his hometown of Quanguan, a small town in the south of the Yangtze River. Dong Yang met many of his childhood friends, but he did not meet Xiao Tai. The disappointed Dong Yang returned to Shanghai. Unexpectedly, after a while, Xiao Tai called and the two people's lives intersected again.
In the days that followed, Beibei's reappearance gave Dongyang the courage to face life, and Qi Jinghuai's warmth and companionship gave Dongyang the determination to continue to love. Dong Yang thought that life would go on peacefully from now on, but he didn't expect that what happened next was like a storm on the sea, slapping the ordinary and weak shoulders of several young people... Family affection, friendship, and love have given ordinary people too much happiness, and also given too many people extraordinary suffering.