The eldest son, found back from the countryside, reaches an agreement with his mother at home to receive a monthly salary and play mother and son to maintain decency. He is clear that his younger brother is the family heir and he only takes compensation to work. For commercial cooperation, the family arranges an arranged marriage for him, and he actively proposes to increase the compensation. Upon first meeting, he encounters the arranged marriage partner who also bears past pains, and the two together face the former partner and best friend who come to entangle.