Four women, with very different backgrounds and characters – the artless Lottie Wilkins, the pious Rose Arbuthnot, the cantankerous Mrs Fisher and the haughty Lady Caroline Dester – respond to an advertisement in The Times offering a medieval castle to rent in Italy that April. As their joint holiday begins, tensions flare up between them, but they soon bond over their past misfortunes and rediscover hope and the pleasures of life in their tranquil surroundings.