In a village in Shanxi, in 1974, the Li family and the Zhang family both gave birth to a son on the same day. The Li family kept up with the times, made a fortune (selling coal), and became a generation of wealthy businessmen. But he also changed from an honest common man to a treacherous coal merchant. The Zhang family is diligent and hardworking in farming, but they are forced by life to dig coal for the Li family. Xiao Li and Xiao Zhang never dealt with each other, sarcastically mocking each other. Lao Zhang died in a coal mine accident. They went to school together and became best friends because of something. Later they developed in the provincial capital. Xiao Zhang opened a supermarket with the help of Xiao Li and became the largest supermarket chain in the provincial capital. They all got married and had children. However, the Li family was ransacked due to an incident. Xiao Li got back on his feet with the help of Xiao Zhang, but both of them divorced because of the incident. Xiao Li received a huge deposit in Switzerland, and together with Xiao Zhang, they started to prosper.