Mrs. Jeannie McVinnie, a young widow, joins the chaotic household of Captain William Summers to help launch his spoiled niece into London society. A chance encounter brings her to the attention of the famous dandy Beau Brummell, who is captivated by her Scottish brogue, fresh beauty and plain-speaking. Tempting as the Beau might be, Jeannie is drawn to gruff, quixotic Captain Summers.