Mary Haines is an understanding woman who is happily married to her husband and lives with him and their daughter in New York. When her friends Edith Potter and Sylvia Fowler visit the beauty salon "Sydney's", they discover by chance that Mary's husband is having a secret affair. Edith and Sylvia go to see Mary that same day, but are unable to tell her themselves. So they decide that Mary must hear the terrible news from Olga, a gossipy beauty salon attendant...