As a boy, Jack Anderson was abandoned by his mother in a Glasgow movie theatre. Now living in the United States and facing his impending retirement, Jack and his wife Anne travel to Scotland to track down his long-lost sister. Their journey takes them from their home in a quiet Boston suburb to the impoverished mill towns of Ayrshire, the gray cobbled streets of Glasgow, and the majestic Scottish Highlands. Along the way, Jack gets entangled in local affairs and must confront uncomfortable truths about family, legacy, and the wife he thought he knew.