Robert Merivel abandons his medical studies for the vibrant Court of Charles II, where he finds unexpected favour with the King and serves as a 'paper groom' to the youngest of the royal mistresses. But by falling in love with her, Merivel violates the one rule that will cast him out from his new found paradise. Driven to work in a Quaker Bedlam, he must endure a yet more painful fall from grace before he can achieve spiritual and social restoration.