"Where did the tree house come from? Before Jack and Annie can find out, the mysterious tree house whisks them to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark ... or will they become a dinosaur's dinner?" --

Embarking on a train trip to visit his grandmother, Pete the Cat accompanies the conductor on a tour of the train, looks at the engine and blows the whistle while making new friends and playing train-themed games.

Elephant Gerald and Piggie want to go for a drive, but as Gerald thinks of one thing after another that they will have to take along, they come to realize that they lack the most important thing of all.

Time has gone wrong, and best friends Dak Smyth and Sera Froste, together with the young Hystorian Riq, must use the infinity ring to travel back to one of the Great Breaks--a mutiny on the Santa María--to correct history and defeat the SQ.

The magic tree house takes Jack and Annie to an African rainforest, where the siblings encounter gorillas and learn to communicate with them.

The seventh graders of McQuarrie Middle School and their Star Wars-inspired Origami finger puppets go on a field trip to Washington, D.C., on what proves to be a very long trip full of shifting alliances, betrayals, carsickness, and sugar rushes.

In an alternate version of present-day Manhattan, magic is dying, and Esta, a Mageus with a talent for manipulating time, travels back to 1901 to stop the destruction of a book that can possibly restore magic, but in Old New York, Esta must navigate gangs, secret societies, and her feelings for another magician in order to save the future of magic.

Jack and Annie travel in their magic tree house to Elizabethan London, where they become actors in a production of A Midsummer Night's Dream and try to rescue a tame bear.

In this fourth book of Timmy Failure's memoirs, Timmy is forced to take his investigation into stolen charity funds on the road when his mother forces him to help her boyfriend move to Chicago. They are on the road in a cross-country trip that includes Timmy's mom, Total the polar bear, Doorman Dave, and criminal mastermind Molly Moskins. It's a world gone mad, where good becomes bad, and Timmy Failure is a condemned man.

Jack and Annie travel 500 years back in time to Florence, Italy, and spend a day helping Leonardo da Vinci in the hope of learning another secret of happiness.