Twenty-eight-year-old Zhou Ming weighs 300 jin and has spent years living off his parents, obsessed with gaming and tipping livestreamers. When his father is hospitalized with a heart attack, he steals the deposit meant to save his father's life and squanders it, breaking his parents' hearts and driving them to sell their house and leave. Homeless and desperate, he starts learning a trade from scratch under the guidance of Fang Jianguo, the owner of an auto repair shop. He sees through a livestreamer's scam and joins his coworkers in gathering evidence to recover their withheld wages. When his father's condition becomes critical again, he finally takes responsibility. In the end, he takes over the auto repair shop and renames it Changlin Auto Repair, determined to live an honest, hardworking life.