Avatar is a work.
Avatar ( marketed as James Cameron 's Avatar ) is a 2009 American epic science fiction film directed , written , produced , and co-edited by James Cameron , and starring Sam Worthington , Zoe Saldana , Stephen Lang , Michelle Rodriguez , and Sigourney Weaver . The film is set in the mid-22nd century , when humans are colonizing Pandora , a lush habitable moon of a gas giant in the Alpha Centauri star system , in order to mine the mineral unobtanium , a room-temperature superconductor .