Todd Wells is prepared for excitement when he joins his father, captain of the atomic tugboat STORMQUEEN, on a voyage from Antarctica to California. For this is no ordinary journey - they are towing five icebergs, each weighing six thousand million tons, to bring pure water to the drought-stricken areas of the United States. But when a violent storm erupts and once iceberg threatens to break loose, the excitement turns to terror - as Todd is caught up in the desperate battle to save the iceberg and the lives of the men on the ship.