Chen Mo, 25 years old, is a low-level analyst at an investment company. Working 15 hours a day and earning a monthly salary of 8,000, he was squeezed by his boss, dumped by his colleagues, and dismissed as "worthless" by his girlfriend. One day I stayed up late to give a report and died of a sudden heart attack. When I woke up, I found myself back in the 17-year-old high school classroom. The cows and horses that were exploited in the previous life turned around and acquired the former company in this life.