Prankster twins Edgar and Ellen think they have found kindred spirits when they join the circus to escape from their mysterious caretaker and the one-eyed creature Pet, but they soon discover that it is hard to tell friend from foe.
Twelve-year-old twins John and Philippa Gaunt discover that they are descended from a long line of Djinn and embark upon a great journey to Egypt with their Uncle Nimrod in order to locate the lost tomb of the Pharaoh Akhenaten.
Mary-Kate and Ashley investigate when someone steals the cheer Ashley wrote and copies the dance moves the twins' squad is using in the Cheerlympics competition.
In an extraordinary day at the beach, after winning a sand castle contest, two sets of twins resolve the mystery of the disappearance of a rich woman's dog.