After years of discussions surrounding a Supernatural spin-off — and one failed attempt with Supernatural: Bloodlines in season 9 — EW has learned that a spin-off titled Wayward Sisters is in the works starring fan-favorite Kim Rhodes, who has played Sheriff Jody Mills on the show for years.

The backdoor pilot, first reported by Deadline, is reportedly set to air during Supernatural‘s upcoming 13th season and will tell the story of Mills and a group of troubled young women, all of them orphaned by supernatural tragedy. Under Mills’ training and protection, the women will emerge as a supreme monster-fighting force.