Cao Xinyi, an 18-year-old girl, was involved in a car accident while riding a shared bicycle in 2025 and accidentally traveled back to 2007, 19 years ago. When she woke up, she found that she was in an era when mass killings were popular. She met her 25-year-old mother Liu Yun. She tried to recognize her but was regarded as a robber by Liu Yun, who had practiced gymnastics. She threw her uniform over her shoulder and called the police. Later, Liu Yun saw that she was pitiful and temporarily took her in.
Cao Xinyi relied on her understanding of the future to buy AJ sneakers at a low price in the second-hand market, and sold them at a high price in the commercial street using a sales method similar to the TV shopping "998", earning her first pot of gold in life, which surprised Liu Yun. But because money was easy to come by, Liu Yun suspected that the shoes had come from the wrong way and went through Cao Xinyi's schoolbag while she was sleeping.
Immediately afterwards, Cao Xinyi planned to take Liu Yun into e-commerce and open an online store on Taobao to sell second-hand items. However, no one showed interest in the store at first. She received her first order through promotion on forums and QQ groups, but she received negative reviews because the product did not meet customers' expectations. She had no choice but to agree to return the product and pay the postage, which was a setback. Despite this, Cao Xinyi was not discouraged. She relied on the business opportunities in her memory to lead Liu Yun to try various investment and entrepreneurial projects one after another. In the process, there were lots of jokes, constant situations, and interspersed with family entanglements and reconciliations. Behind every seemingly successful success, there are new crises and reversals, and the crisis of Cao Xinyi's disappearance also follows, and there seems to be a bigger secret hidden behind it... In the process, she works hard to change her mother's fate, trying to make her mother the richest man, while also unraveling the truth behind the crisis of her own time travel and disappearance.
