Mary Davies lives and works in Austin, Texas, as an industrial engineer. She has an orderly and productive life, a job and colleagues that she enjoys, particularly a certain adorable, intelligent, and hilarious consultant. But something is missing for Mary. When her estranged and emotionally fragile childhood friend Isabel Dwyer offers Mary a two-week stay in a gorgeous manor house in Bath, Mary reluctantly agrees to come along, in hopes that the holiday will shake up her quiet life in just the right ways. But Mary gets more than she bargained for when Isabel loses her memory and fully believes that she lives in Regency England.