When the dowager duchess of Marcross insists he accompany her niece, Ginny, into the country for the day to execute a special task, Sir Anthony is appalled, to say the least. Ginny, who thinks little of the fashionable Sir Anthony, is as eager to be done with the chore as he, but before they arrive at their destination they are stranded by highwaymen and launched into adventure.
Forced into each other's company, Ginny begins to sense the passionate nature beneath Sir Anthony's mask of ennui, while his exasperation with the forthright Ginny turns into admiration of her wit and charm. Then beautiful Lucinda Barrington and Lord Avery, a poet, come onto the scene, sparking Ginny's imagination and revealing a way to unmask the true man behind Sir Anthony's frivolous façade. Meanwhile, the dowager duchess has plans of her own for this pair, and her special task turns into a battle of words, wills, and wit.