Two Americans, Tommy Albright and his pal Jeff Douglas, chance upon a small Scottish village in a Highland mist. They discover that Brigadoon is an enchanted place that only comes to life for one day every hundred years. Tommy and Jeff meet Fiona MacKeith and Meg Brockie, and Tommy and Fiona soon find in each other a deep understanding.

We follow the villagers through a day that includes a wedding and learn that if one of the inhabitants should leave Brigadoon the spell will be broken forever. There is a near disaster when a young embittered Scot tries to take his revenge. He dashes through the forest but is killed making his escape. Happiness is changed to mourning.

Tommy has by now fallen deeply in love with Fiona but his is told he cannot stay. He goes back with Jeff to New York and quarrels with his fiancee. Suddenly in a New York bar he sees a vision of Fiona and comes to a decision. He knows he must return to Scotland. There by the power of love he reawakens the slumbering Brigadoon just long enough for him to be reunited with Fiona.