This retelling of the classic tale of James Hilton’s Utopian lost world plays out uneasily amid musical production numbers and Bacharach pop music. While escaping war-torn China, a group of Europeans crash in the Himalayas, where they are rescued and taken to the mysterious Valley of the Blue Moon, Shangri-La. Hidden from the rest of the world, Shangri-La is a haven of peace and tranquility for world-weary diplomat Richard Conway. His ambitious brother, George, sees it as a prison from which he must escape, even if it means risking his life and bringing destruction to the ancient culture of Shangri-La.

Running from the law after a bank robbery in Mexico, Dad Longworth finds an opportunity to take the stolen gold and leave his partner Rio to be captured. Years later, Rio escapes from the prison where he has been since, and hunts down Dad for revenge. Dad is now a respectable sheriff in California, and has been living in fear of Rio’s return.