Zhou Nannan, a single mother, believes that she can give her son Xiaoyang a happy life just on her own. But at the critical juncture of getting her son into a primary school after his graduation from kindergarten, she realizes that all the moms in the kindergarten have their own troubles. The competent career women find themselves fail to be good moms while those full-time housewives who just focus on their husbands and children feel quite ignored. Children are childish but moms are also the novice. No one is born to be a mom. Should they cultivate their children into elites at all costs or just let them be? Should those moms give up everything for their kids or be themselves?