Clair's sister Sarah announces her engagement. While Clair and Sarah work on wedding plans with their mother, Cliff continues his chess rivalry with Clair's father. Clair and Carrie are amused to learn that Sarah has been consulting books for advice about marriage. They begin offering tips on what it is really like to have a husband, and burst into hysterical laughter. Cliff and Al notice that the laughter stops every time one of them enters the kitchen. Al is unsure about singing at Sarah's wedding because he fears he will become too emotional. Clair tries to change his mind.