It is a continuation of the famous works of Verne "20,000 leagues under water" and "Children of Captain Grant." The book tells about the events taking place on the fictional island where Captain Nemo stayed on his submarine Nautilus. The main characters are five Americans who find themselves on a desert island in the Southern Hemisphere. In total, the novel has 62 chapters, divided into three parts ("Crash in the Air," "Abandoned," "The Secret of the Island").