A look at new mom Lin Xiao’s daily battles of wits with Tangtang, her one-and-a-half-year-old “little devil incarnate,” as she swings back and forth between breaking down and finding comfort. Amid the chaos and exhaustion of raising a child, and all the countless things she “never expected,” she discovers a love and growth that are as primal and clumsy as they are deeply moving, as both parents and child grow together.