The Phantom Tollbooth, By Susan Nanus, started out like It was just a normal day in Milo's room when a tollbooth came out of nowhere. Milo decided to go in, saying, "What else do I have to do"
Milo arrived on the other side in a place called the Doldrums. Here, he met a few wacky people that didn't really help him on his journey. Then he met the watchdog, Tock, who helped Milo on his journey.
Tock told Milo about how a long long time ago, the king and the Mathmagician banished Princess Rhyme and Princess Reason.
Milo and Tock meet the Spelling Bee and The Humbug. They were invited inside the kingdom for the royal banquet. The group decided that the kingdom wasn't the same without Rhyme and Reason. They then arranged for Milo, the Humbug and Tock to go and save the princesses.
On the way to the Castle-In-The-Air, they met Kakafonous who doesn't enjoy pleasant things. They then met the DododecaHedron who led them to Digitopolis where the Mathmagician was. Milo convinced the Mathmagician to help return the Princesses.
After running into people along the way, the group was running to save the princesses, while they were also running from demons. Milo had to use his spelling powers to make an entrance for the princesses to escape. Then Tock started to fly all of them away. Then the kingdom had a celebration to celebrate the returning of the Princesses and the success of Milo.