After finishing scattered part-time jobs, Gu Qinghe reorganizes the used books she has accumulated over the years and opens a second-hand bookstore in a community shop. Facing problems such as a limited budget, insufficient book sources, chaotic classification, and operating rules, she does not rush for quick success, but step by step learns book acquisition standards, controls costs, organizes inventory, and clearly explains the condition and price of every single book. With the help of friends, veteran masters, and community neighbors, she gradually makes the small shop run smoothly. With seriousness and integrity, she proves that used books also have new value; as long as one is down-to-earth and does small things well, ordinary life can likewise turn a brand-new page.