In All Demons Go to Heaven, Samwell is an orphaned guy who is innocent and shy and has no friends. He has been constantly bullied by his caretaker Charlotte. Grynesha is a succubus who escaped from the Demon World and came over to the Human World. She had one goal, and that's to recover her home from the being that took it away from her. The two characters find themselves teaming up against a variety of evil characters, and there's also plenty of lust to go along with the story.