Independent and stubborn single mother Zhuang Xixi worked to support her family while starting a business. Her life was originally simple and fulfilling until her mother Zhao Chunhua became seriously ill in order to send her 5-year-old grandson Zhuang Xiaoyang to an expensive kindergarten. She had to shoulder the burden of the whole family and face the problem of her child's education. As the competition gradually escalated, Zhuang Xixi learned about the bitterness behind the glamorous middle-class mothers, and she became more anxious and confused. At the same time, Xiaoyang's foreign teacher, the sunny and cheerful Shen Zhan, took a liking to her, and Xiaoyang's biological father, the mature and shrewd Yang Shuo, suddenly returned to China and took the initiative to pursue her, which made Zhuang Xixi waver. After experiencing various crises such as exclusion and rumors, school district housing fraud and the death of her mother, Zhuang Xixi finally understood the most suitable path for her child's growth and achieved herself. Her strength and optimism also helped change the mothers around her.