Welcome21Korea of the century，A constitutional monarchy where tradition and modernity are intertwined。Under the glamorous exterior，There is a social class system with clear barriers。Cheng Xizhou，A talented chaebol heir and CEO，Seems to have it all，But as a commoner, she has never received the respect she deserves。After meeting Lord Li'an at the birthday banquet，She is determined to take control of her own destiny。She has it all，Only lack of identity；And he has a noble status，In fact, there is nothing。The two concluded the marriage contract of the century。Can they break down social barriers?，Create your own destiny？