A monumental philosophical novel by Ayn Rand, set in a United States experiencing economic and social collapse. The story follows railroad executive Dagny Taggart and steel magnate Hank Rearden as they confront increasing government intervention, societal decline, and the mysterious disappearance of the nation's most talented innovators. At the heart of the novel is the enigmatic question: "Who is John Galt?"

The book presents Rand's philosophy of Objectivism through an epic narrative that explores individual achievement, reason, free markets, personal responsibility, and the role of creators and innovators in society.