A rural grandma installs air conditioning, sets up internet, gathers country eggs, roasts tea leaves, and buys milk candies for her city grandson Xiao Bei, sitting on the threshold every day hoping he will return home. Xiao Bei always says he is busy, does not answer calls, and does not return even for the Spring Festival. Grandma falls critically ill and is hospitalized; Xiao Bei rushes to the hospital, holding her unconscious hand, breaking down for the first time. Five years after grandma recovers, Xiao Bei has started a family and brings his wife back to her hometown to visit her. The whole series tells of waiting, regret, and making amends, with grandma's love hidden in every detail, reminding us to cherish the people in front of us.