On a stormy day, grandpa Wang Defu deceives his 4-year-old granddaughter Yaya, lying that he is going out to help her find her dropped longevity lock, while actually rushing off to dance square dance. Innocent Yaya goes out alone holding an umbrella to deliver the umbrella, unfortunately falls into an uncovered drainage well, and is seriously injured leaving psychological trauma. Family conflicts completely erupt, and family members accompany Yaya through her difficult recovery while investigating responsibility for the accident. The grandpa who made mistakes embarks on a path of redemption, can a scarred family still find warmth with each other?