Gillian, Helen, and Carol are three suburban mothers who have known each other since their respective sons were babies, and have met in a regular coffee group for years. These days, their sons are a bunch of thirty-four-year-old layabouts: they have no wives and no children, never call, and seem unlikely to outgrow their post-adolescent lifestyles anytime soon. After yet another fruitless Mother’s Day, Carol has an outlandish but irresistible idea: each woman will go drop in on her son for an unexpected weeklong visit and find out what’s really keeping him from responsible adult life.