Professor Aronnax, his faithful servant, Conseil, and the Canadian harpooner, Ned Land, begin an extremely hazardous voyage to rid the seas of a little-known and terrifying sea monster. However, the monster turns out to be the Nautilus, a giant submarine commanded by the mysterious Captain Nemo, by whom they are soon held captive. So begins not only one of the great adventure classics but also a truly fantastic voyage from the lost city of Atlantis to the South Pole.