It tells the story of Lin Xiaoman, a modern e-commerce practitioner who accidentally travels back in time on a rainy night to an old street supply and marketing cooperative in 1998, where she meets her grandfather Lin Laogen when he was young. Using modern business ideas, she revitalizes the old shop, deals with the competition from chain supermarkets, accompanies her grandfather in rediscovering his woodcarving craft that had been set aside for years, and step by step fulfills the five wishes hidden inside the old red wood abacus. This time-traveling companionship fills the regret in Xiaoman's longing for her grandfather and brings the old shop back to life.