Marlow, a seaman and wanderer, recounts his physical and psychological journey in search of the infamous ivory trader Kurtz. Traveling up river to the heart of the African continent, he gradually becomes obsessed by this enigmatic, wraith-like figure. Marlow's discovery of how Kurtz has gained his position of power over the local people involves him in a radical questioning, not only of his own nature and values, but those of Western civilization....