One day Milo comes home home from school and sees a package that is for him. Milo opens it and a voice tells him whats in it and what they do. The voice says you can go anywhere with the toll booth just have were you want to go in mind. Milo wants to go to dictionopolis just because he had never heard of it before.
Milo arrives at dictionopolis. There he meets king Azaz, the humbug, and tock. Then Milo hears about how words vs numbers was a thing. He also hears that Princess Rime and reason banished from the kingdom.
Next, Milo decides he want to try and go save the pincesses. First he has to get king azaz's permission. He asked king azzaz for permission king azaz said it was ok and gave milo a box of letters to help him on his journey.
Next, Milo has to get the mathmagition's permission. The mathmagition finally agrees that they can go but he will not help them.
Then Milo starts making his journey through the mountains of ignorance to the castle in the air.
Finally, Milo arrives to save the day. Milo ends up saving the princesses after a long journey and an harrowing escape with the help of friends.