Jessie was just a normal girl living a normal and boring life. She had a rough past and holds something dark inside of her, she didn't know what it was until she met a strange man that goes by the name of The Doctor. He takes her across the universe and shows her all kinds of wonders, she thinks life is finally looking up for her until the darkness inside her manifests itself into a horrific demon that tried to take over Jessie's mind and body, it's up to The Doctor to try to save his new friend from this darkness. He goes from a stranger she originally feared to the man she can't live without.