Tam, an English woman in her thirties, has been living in this harshly beautiful region since shortly after the war, in which she served as an auxiliary pilot. She is now leaving her lover, Niall, who, like his father before him, is a meteorologist. The airliner she is travelling on becomes grounded by fog at Gander Airport, Newfoundland. As she waits, she regards an enigmatic mural, and revisits not only the circumstances that brought her to Ireland but her intense relationship with Niall and his growing despondency over his younger brother Kieran's disappearance years before.