Flowing 4,000 miles from Central Africa to the Mediterranean, the Nile River has long exerted a mystical influence on man's imagination - and the dreams of explorers such as Jacques and Philippe Cousteau. In this breathtaking journey, the Cousteaus embark on a daring 10-month expedition along the entire course of the world's largest river, capturing on film the Nile's astonishing natural beauties, menacing dangers, primitive cultures and animal sanctuaries.