Ruby's a traitor, the other demons want her head on a platter, and none of them even bothers to ask why she's doing it. Almost none.
When Jared takes over his grandma's farm, he inherits a few things - like a brownie. Magical fairy tale company is better than no company at all, but the brownie can only stay as long as she's cleaning something. She and Jared get pretty creative about finding things for her to clean.