Christmas is an ancient Roman festival, not to be celebrated by decent folk in the Scottish Highlands. Police Constable Hamish Macbeth has always loved the festivities, but this year his family is vacationing in sunny Florida. He is stuck with the long, lonely Christmas shift in freezing Lochdubh. A cranky old lady kicks off the holidays by reporting her cat missing. Then the Christmas lights and tree in a nearby village disappear soon after the local council voted to allow decorations. As Hamish finds a way to bring Christmas to the Highlands and make a little girl's dreams come true, he finds – to his delight – that he has the best Christmas ever.