Through the Small Door

Samantha Laurence is cleaning her room when she discovers a small door behind her dresser. When she opens the door she finds herself in a candy garden with a talking gingerbread man. Eventually she learns that the gingerbread man is actually her great-great grandfather and that she herself is a witch. Samantha is forced to use her newly discovered powers to defeat four evil familiars who have taken over the bodies of four of her classmates.