Madeline is married to Ernest, who was once arch-rival Helen's fiance. After recovering from a mental breakdown, Helen vows to kill Madeline and steal back Ernest. Unfortunately for everyone, the introduction of a magic potion causes things to be a great deal more complicated than a mere murder plot.
After 300 years of slumber, three sister witches are accidentally resurrected in Salem on Halloween night, and it is up to three kids and their newfound feline friend to put an end to the witches' reign of terror once and for all.