Celebrity photographer Grace Buchanan has always known that, one day, she'd swap her manic day job for the peace and quiet of her beloved childhood cottage, St Christopher's - she just didn't expect it to be so soon. At the reading of her mother's will, she's shocked to learn that inheriting St Christopher's hangs on one condition: Grace must drop everything for two weeks and travel the country with a mysterious stranger - war-weary Royal Marine, Alasdair Finn.