26-Year-old unwed mother Shen Li lives with her 5-year-old daughter Mengmeng and her elderly father. Neighbors are talking a lot because no one has ever seen the child's father. Shen Li's family also moved here just a few years ago. Just when Shen Li thought his life would be peaceful, the appearance of his first love in his youth, Xu Jialuo, broke everything. At this time, a man who claimed to be the father of his child also appeared. As the truth was revealed, it turned out that all this was the mistake they had made with each other. And what choice will Shen Li make after experiencing too much?