The supernatural is real. Monsters, demons, angels, all of it's real. This knowledge has only been known to the public for a few years, and everyone's still getting used to it. One good thing about it though, exorcists like Nichole don't have to hide in the shadows anymore. After an unsuccessful exorcism though, she makes a deal with a demon, one that forfeits her soul. Now the demon follows her everywhere, and both her and her mentor have to cope with the unwanted presence.