Hee-ra is the owner of the Witch's Diner where employee Jin and intern Gil-yong work with her. Guests are welcome to the Witch's Diner where they sell their souls for their wishes to come true.
No matter how you look at it, the drama was a missed opportunity for something much better. It's a very dumbed-down secondhand tacky "be careful what you wish for" type of story. Little to no dynamic between the female lead and the witch until the last episode. The introduction of the female lead and her "wish" was definitely a weak start for the drama. Poorly written and executed love interest for the female lead, it wouldn't have been an issue if they didn't give her a trashy pair up but instead something that would serve the narrative and the resolution better. None of the clients were interesting and the outcome was always lacking the x-factor other than the obvious trade off of the deal. At least the drama looked nice and the cast was good enough.