A boy Named Milo is very bored, when a tollbooth is delivered in his room. Milo drives through in his toy car. He finds himself in the Doldrums. A watchdog named Tock rescues Milo, and they drive to Dictionopolis, the capital of letters and words.
When Milo and Tock get to Dictionopolis, they go to a royal feast, and learn about the princesses, Sweet Rhyme and Pure Reason, being banished, and the chaos in the kingdom. The king Azaz sends Milo, Tock, and a bug named Humbug to Digitopolis, the capital of numbers.
When Milo, Tock, and Humbug get to Digitopolis, they ask the king, Matmagician for permission to relaese the princesses. The king said that as long as Azaz agrees, he would not. Milo tricked him, and of set Milo, Tock and Humbug.
Milo and Humbug got to the Land of Ignorance, and were fooled by the demons. They got trapped, and barely made it out. Then they ran to rescue the princesses. King Azaz's and the Matmagician's army helped Milo, Tock and Humbug.
When Milo, Tock and Humbug returned, the were praised and learned many life lessons. Milo then had to return home, and from that point forward, he always enjoyed his toys.