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