Last Halloween, Sienna turned her boyfriend into a cat – totally by accident. Hidden away in the bayous, Sienna knows she is the Neville Longbottom of the esoteric world. Now it’s All Hallows Eve again, and the young witch needs to help Luke get his body back. But as the evening progresses, Sienna’s nerves are frazzled by her lack of ability and an increasingly snarky cat. In desperation, she summons the shade of her ancient grandmother who waffles on about demons and the Purge during the 1800’s. Left alone, Sienna wonders if she has the talent to return Luke back to his true form at all.