Clint Chandler, a widower, cares for his stroke-ridden father and young daughter Dottie. He hires nanny Lin Qiaoyun, who secretly mistreats his elderly father. Dottie notices, records key evidence with her smartwatch. Clint finds clues, uses Dottie's evidence to uncover the truth, and with police, arrests the abusive nanny. The family returns to a stable life.
