Reiko is a mother who raises her son by herself.Her son is now a university student, and he is playing around without helping out at the soba restaurant he runs at home.Reiko's son's friend, Shiro, who couldn't see how busy Reiko was, offered her a part-time job and decided to let her work.Shiro, who secretly resembles Reiko like his mother, wants to help Reiko, but at the same time he has a twisted desire.And Shiro, who gave Reiko a Mother's Day gift at the end of his part-time job, can't control his overflowing desire...
