Interested in L. Frank Baum's book The Wizard of Oz that Adam got, Phineas & Isabella decide to read it, but Phineas & Isabella become so tired they fall asleep. When they wake up, Ferb, Buford, Baljeet and everyone else are like the characters from The Wizard of Oz! Now, Phineas & Isabella explore the magical land of odd and must get to the wizard, but things are not what they seem to be.