When Polly and Theo Noble book the Casa Luna, near Cortona, for their summer holiday they plan a civilised Anglo-American house-party with Theo's brother Daniel, Daniel's girlfriend Ellen, and Polly's old schoolfriend Hemani in an idyllic Tuscan setting. Their children Tania and Robbie will have Hemani's son Bron to play with, and Theo's mother, Betty is expected keep her grandchildren under control by force of a personality that can curdle mayonnaise at a hundred paces. Even Ivo Sponge, the notorious journalist with whom Ellen was once entangled, should do little to spoil their pleasure. But the Casa Luna is a place where strange things happen, and anyone who lives there risks unexpected joys and sorrows. As both children and adults find it increasingly difficult to tell what is fantasy and what is reality, the tiny winged creatures who have persuaded Tania to brew a love potion start to take over ... The result is that of the four couples who have begun the holiday together, all have swapped partners by the end (and one has swapped sex of partner!). This is a subtle and delectable comedy of manners about love, lies and the dangers of a strong imagination ...