When widowed Lady Millicent Copley is invited to spend Christmas in Devonshire, she meets the much sought-after bachelor, the Marquis of Wetherby, whom she thinks a cad. He believes her to be mouse. But Lady Millicent's son, Rupert, thinks the Marquis is the answer to his prayers, and he is willing to carry out an outrageous scheme to help him get his Christmas wish--a new father.