From the back of the book:
Delve into the world of the Fated. Discover hidden secrets and ancient artefacts. Explore the planes, manipulate aether, and shape the gauze. But be wary, the demons are ever watchful, hungry for souls and waiting to play their wicked games.
Witch: Fated Souls is a dark, modern fantasy role playing game. You play a member of the Fated, a person who has sold their soul to a demon for power. The mysteries of magic and the countless wonders of our world are now yours.
While you explore the cosmos you must be wary. Hunters and other antagonists lukr in the shadows ready to strike, but most of all, watch out for your demon. Can you beat your demon at their own game and regain your soul? Embrace your fate and find out.