After an extended stay in Paris to care for her ailing mother, wealthy Nancy Gibson is happy to be heading back to her Long Island home to be reunited with her husband, Don Gibson, who she dearly loves. Upon her arrival at the house, Don is not there. Nancy learns from husband and wife Billy and Sally Ross - Don's business partner and Don's sister - that Don is with his mistress, Peggy Preston, who he intends to marry if Nancy will grant him a divorce. Apparently, everyone is aware of the situation and most, including Billy and Sally and the household servants, are on Nancy's side. After composing herself following receiving this devastating news, Nancy, who still loves Don and wants to be with him, decides that there are better ways of getting him back than to be the devastated wife. Acting the modern woman, Nancy pretends that she too has fallen in love with another man she met in Europe.