Daughter of a modest country clergyman, Arabella Tallant is on her way to London when her carriage breaks down outside the hunting lodge of the wealthy Mr. Robert Beaumaris. Her pride stung when she overhears a remark of her host's, Arabella pretends to be an heiress, a pretense that deeply amuses the jaded Beau. To counter her white lie, Beaumaris launches her into high society and thereby subjects her to all kinds of fortune hunters and other embarrassments.

When compassionate Arabella rescues such unfortunate creatures as a mistreated chimney sweep and a mixed-breed mongrel, she foists them upon Beaumaris, who finds he rather enjoys the role of rescuer and is soon given the opportunity to prove his worth in the person of Arabella's impetuous young brother...