While their elders are away at a wedding in Boston for the weekend, Alan and Nathaniel are trusted to stay on their own. Then Warren, inspired by an article in Life, comes up with an idea for a ""dinner party"" with Katie and her friends ""the Marys,"" and Nathaniel is excluded. But the tables are turned on the boys when Nathaniel gets sick and the girls pay more attention to him than to them. (thetvdb.com)