When Percival Lord Thornstead heads to the far north of England to meet the bride his father has arranged for him to marry, bad weather, the ague and a crooked valet disrupt his travel plans. Turned away at the door of the manor, he takes a job minding sheep to stay close.

Lady Aurelia Byrne sneaks away from the house dressed as a kitchen maid. She is angry at being told she must marry someone she has never met. She’d rather marry the shepherd she meets in the fields than the London fop her father has chosen for her.

Percy guesses who Lia is and is charmed. Lia discovers who Percy is and falls in love. If not for Lia’s overbearing mother all would be perfect.

Then Percy’s father intervenes to carry Lia off to London to make her debut with Percy’s sister. She is having the time of her life when her mother makes public accusations that call her reputation into question. A hasty marriage restores her to favor. Deep in the throes of love, the young couple are blissfully happy, and have fashionable London at their feet.

Until a former mistress of Percy’s comes seeking a boon that takes him away from Lia’s side, and old rumors about Lia’s mother are revived, causing Lia to be shunned by the highest sticklers.

Their marriage will be tested to breaking point.