On her sixteenth birthday, Sabrina Spellman discovers she has magical powers. She lives with her 600-year-old aunts Hilda and Zelda as well as talking cat Salem in the fictional town of Westbridge, Massachusetts.

A young teenage girl is hired by a strange couple to watch their baby for the night. What the babysitter doesn't know is how strange the couple is, and exactly what kind of baby she is watching over.