"The Phantom Tollbooth" is a children's novel written by Norton Juster. It follows the adventures of a young boy named Milo who is bored with life. One day, he discovers a mysterious tollbooth that transports him to a fantastical land filled with peculiar characters and places. In this magical world, Milo meets various figures like Tock, a talking dog with a clock for a body, and The Humbug, a self-important insect. Throughout his journey, Milo learns valuable lessons about knowledge, curiosity, and the importance of words, ultimately discovering the joy of learning and exploration.