In 18th-century London, two siblings, Prudence and Robin Merriot, are forced to go into hiding after narrowly escaping a dangerous political situation. Prudence takes on the persona of a charming young man named Peter, while her brother Robin poses as a fashionable woman named Kate. As they navigate London society, they become entangled in misunderstandings and romantic relationships. Eventually the Merriot siblings’ true identities become difficult to keep concealed—especially as...