Mary-Kate and Ashley Olsen star as twins Kelly and Lynn Farmer, who must outwit their mean Aunt Agatha, a nasty witch, to save their family's home as they stir up a bubbling Halloween brew of spellbinding adventure, spooky delights and fun for the whole family in Double Double, Toil and Trouble. When the twins learn that Agatha has trapped her own sweet twin sister, Sophia, under a wicked spell they race to rescue their kindly aunt before it's too late. On their quest, they are helped by some remarkable friends--homeless eccentric Mr. Nofziger (Meshach Taylor), little person Oscar (Phil Fondacaro), and a nervous gravedigger (Wayne Robson). Now, as the small but daring band confronts evil Agatha, Lynn and Kelly learn something very precious about a sister's love.