Laura and Donal, Breffni and Cian, Andrew and Ruth: three contented middle-class couples, gathering at each other's houses for dinner parties, bound together by shared memories of childhood adventures. But, beneath the cosy contentment of their lives lies tensions that threaten to erupt at any moment. Andrew, Laura's handsome brother, has just returned home from Crete with his bride in tow, the surprisingly timid Ruth, who is finding it hard to fit in with Andrew's overbearing mother, Cecily. And, to her increasing concern, Andrew doesn't seem to have his mind entirely on her... Laura is desparate to have a family, and can't understand why Donal doesn't seem to share her only wish. And the beautiful, glamorous Breffni, with her lovely husband, Cian, and the golden child, Polly, well, she has the greatest surprise in store...