Yu Richen (played by Wang Zongyao), a second-generation rich man surrounded by beautiful women and luxury cars, was driving under the influence of alcohol and hit a female passerby, causing serious injuries. He was sentenced to one and a half years in prison after facing a court ruling within 48 hours of the accident! After entering prison, he was shocked to find that the world behind the iron bars was a universe that was independent and followed a dark order. As long as he knew how to integrate into the rules of survival, he could safely spend his sentence. Yu Richen used his second-generation rich thinking and wealth to optimize the quality of the stereotyped prison life. The prison we are familiar with has become different from now on! His mortal enemy Aji (played by Zhang Jiansheng) was also sentenced to serve his sentence in the same prison. Aji's usual arrogance and indulgence, relying on his wealth to collude with ethnic minorities and the big circle gang in prison. How will he deal with the strong pressure behind the bars?