Marlow, a seaman, tells of a journey up the Congo. His goal is the troubled European and ivory trader Kurtz. Worshipped and feared by invaders as well as natives, Kurtz has become a godlike figure, his presence pervading the jungle like a thick, obscuring mist. As his boat labours further upstream, closer and closer to Kurtz's extraordinary and terrible domain, so Marlow finds his faith in himself and civilization crumbling.