Ruth is an abnormally tall and ugly housewife whose husband, Bobbo, considers their relationship an open marriage based on convenience alone and he only married her because he got her pregnant when they were both teenagers. Bobbo only truly loves his mistress Mary Fisher, a famous, wealthy romance novelist. When Ruth passionately indicates her disapproval for Bobbo's extramarital affair, he calls her a "she-devil", causing her to reassess her life. She resolves to behave in accordance with the label he has given her.