Something monstrous wants to exit Wonderland and enter the real world. Lewis Carroll, author of the classic book Alice’s Adventures in Wonderland, secretly recorded the true story of his actual travels to Wonderland in four journals which have been lost to the world . . . until now. Celia and Tyrus discover the legendary Lost Diaries of Wonderland and fall into a portal that pulls them into the same fantasy world as the White Rabbit and the Mad Hatter. However, Wonderland has vastly changed. Some of the characters that Tyrus remembers from the book have been transformed into angry monsters. Helped by the Cheshire Cat and a new character, Sylvan, a young rabbit, Celia and Tyrus desperately work to solve puzzles and riddles, looking for a way out of Wonderland. But the danger increases when the Queen of Hearts begins hunting them, believing the two young visitors hold the key to opening multiple portals to multiple worlds, and she will stop at nothing to capture them. Will the crazed creatures of Wonderland escape into the real world? Can Celia and Tyrus stop them and save both worlds? Or will they be trapped in Wonderland forever?

After returning from Wonderland, Celia and Tyrus journey to the Looking-Glass World to reclaim their mirror images and stop a war between two powerful queens. When the Bandersnatch steals one of Lewis Carroll’s lost diaries, Celia and Tyrus try to get it back, only to tumble through a magic mirror into the Looking-Glass World, a place where everything—themselves included—is divided in two. Celia’s logic and Tyrus’s imagination now belong to their mirror images, Lia and Ty. Left without their greatest problem-solving skills, Celia and Tyrus must rely on each other as they play a massive game of chess to try to catch their mirror images. Along the way, they engage in a rhyming battle with Tweedle Dee and Tweedle Dum, seek advice from Humpty and Dumpty, and learn how to believe in the impossible from the White Queen, who remembers the future as if it were the past. As the final battle draws near, Celia and Tyrus form an uneasy alliance with Lia and Ty to find the legendary vorpal sword—the only weapon powerful enough to stop the war. If they fail, not only will two kingdoms be destroyed, but Celia and Tyrus might never regain their stolen talents and could be trapped in the Looking-Glass World forever.