Celia Lytton is the beautiful and strong-willed daughter of wealthy aristocrats and she is used to getting her way. She moves through life making difficult and often dangerous decisions that affect herself and others-her husband, Oliver, and their children; the destitute Sylvia Miller, whose life is transformed by Celia's intrusion; as well as Oliver's daunting elder sister, who is not all she appears to be; and Sebastian Brooke, for whom Celia makes the most dangerous decision of all.