• Protagonist: Lin Xiaoman (female, 28 years old, a white-collar worker living alone in the city, sensitive and introverted personality, estranged from her father due to the early death of her mother); Grandma Chen (female, 72 years old, a grocery store owner in the old city, widowed without children, gentle and tough personality, hiding an old leg disease). The "Long Street" in the old coastal city in the south - the street is lined with old arcade houses. Grocery stores, tailor shops, and sugar shops are scattered here and there. The street lamps are yellowed old-fashioned light bulbs. After dusk, the aroma of seafood porridge and sweet-scented osmanthus floats. In recent years, due to urban demolition plans, the shops have been closed one after another. Lin Xiaoman moved back to a rental house on a long street due to a setback at work, and accidentally walked into Grandma Chen's grocery store. The two went from strangers to dependence. However, due to demolition and the recurrence of Grandma Chen's old illness, they were forced to face "separation" and "reconciliation" - Lin Xiaoman needed to resolve the estrangement with his father, and Grandma Chen needed to let go of her obsession with her late husband. The two completed "farewelling to the past" in each other's company.