Winnie and Wilbur are on their annual visit to the Worldwide Witches' Festival, meeting witches (and their cats) from all over the globe! They have a wonderful time partying, dancing and learning new spells. When the festival is over, Winnie and Wilbur hop on their broomstick and zoom off on a magical mystery tour to visit their new friends in a tropical treehouse, a castle by the sea and a house on top of a mountain! When they arrive back home, it's much too quiet-but then there's a knock at the door...