Natalie Carson is just your average person living an average life as an office worker. She was a good girl in school, never got into trouble, and has a decent job. One morning, she wakes up with no recollection of what happened the previous night. She feels sick, and calls off work, until she finally, reluctantly take her coworker's heads to the doctor's office.
It's there that she discovers that she is pregnant, pregnant by a demon no less. The demon takes her to his mansion and makes her his prisoner, forcing her to leave a majority of her 'free life' behind. Why? Well, in his words, he 'felt like making a good girl miserable.'