'Dear Millie' is the title of a Lonely Hearts column which Millie Tyson writes. She has a summer home in New England close to her three best friends. They have decided that Millie is getting a little too conceited in her advice-giving and have devised a plot wherein they will confide in her that each of their husbands is secretly seeing their best friends. Millie is no one's fool and artfully turns the tables on them before her secretary brings about another surprise. The sixth character is a country maid who has problems of her own. The dialogue is bright and witty, and the plot full of surprises.