Ewan Cameron, estranged grandson of the Duke of Lotheil, is in London because of a deathbed promise made to his father and has no intention of staying beyond his three month obligation. Nothing can tempt him to remain, not even Lily, the beautiful bluestocking determined not only to restore relations between him and his grandfather, but to turn Ewan into a proper gentleman. Ewan, proud of his Scottish heritage, refuses to admit that Lily, a blue-eyed, English girl, has claimed his heart. It doesn't matter that his big lump of a sheepdog is madly in love with her. Nor is it significant that Ewan can always tell Lily apart from her identical twin sister. Always.

Lily Farthingale, the scholarly twin, dreams of becoming the first female member of the Royal Society. She grabs at the chance when the elderly Duke of Lotheil approaches her with a proposition—he'll admit her into the Royal Society, if she helps him to establish a relation with his estranged grandson, Ewan Cameron, a very rough-around-the-edges Scotsman who hates everything English. Between shootings, explosions, and Lily's abduction, Ewan ends up falling in love with Lily in this Pygmalion-inspired story.