Kira Thomas has been hunting with the Winchesters for some time, moving in after her parents, hunters themselves, were killed during a hunt. One boring afternoon in the bunker, Kira decided to look through the boxes of her parents' things and finds her mother's jewelry box. A locket catches her eye, but it's no ordinary locket. It contains powerful, magical properties, ones that send Kira to a parallel dimension. The woman whose place Kira took is then sent to the bunker, where she teams up with the Winchesters. The goal is to return everyone to her rightful dimension, while trying to keep the locket from falling into Lucifer's hands.
13 parts