Travel with Colonel Kurtz and his family as they enter the "heart of darkness" on a humanitarian mission for Belgian King Leopold's Congo Free State, opening a trading post in the uncharted interior of the Congo jungle to help promote free trade and abolish slavery in the region. With the help of a local tribe, they establish the post, but to survive in this lawless land, they must contend with murderous slave traders, corrupt officials, psychotic explorers, cannibalistic tribes, and the most dangerous threat of all: a primordial evil dwells deep within the jungle, whose origins and mythology date back to the womb to civilization, perverting minds and corrupting souls, while preying on the worst instincts of humanity. The locals speak of this insidious malevolence in fearful whispers, calling it "The Horror."

The Horror provides a prequel to Joseph Conrad's Heart of Darkness, exploring the origins of one of the most enigmatic characters in storytelling while examining one of the worst atrocities and humanitarian disasters ever recorded.