In a flooded future Earth, people cling to man-made floating islands for survival. When a tyrannical madman driving a supertanker over the world in search of dry land, invades one of these islands a mysterious wanderer named the Mariner rescues a woman and her adopted daughter from the slaughter and they embark on a quest that could save mankind. Academy Award Nomination: Best Sound. Starring: Kevin Costner, Dennis Hopper Michael Jeter. Director: Kevin Reynolds.