Teenager Max Dennison (Omri Katz), his sister Dani (Thora Birch), and their friend Allison (Vinessa Shaw) explore an abandoned house in Salem, Mass., and accidentally free the Sanderson sisters (Bette Midler, Sarah Jessica Parker, and Kathy Najimy), a trio of witches who used to live in the house. To keep them from becoming immortal, the young friends much steal and destroy the witches' spell book.