The films tells the tale of the origins of Solomon Kane, a mercenary for Queen Elizabeth I. Fighting for Her Majesty in Africa, he has an encounter with the demon, The Reaper, and realises, to his horror, that either he must seek redemption or have his soul damned to hell. On his return to England, he starts leading a life of peace but the evil-doings of a sorcerer upset his plan and he is forced to take up arms.