Twelve-year-old Basil meets an eccentric professor with a flying boat and sets off on a journey into the clouds, where they find a floating city filled with otherworldly inventions and ideas.
Having jumped off the church roof and into the fantastic Land of Luster, Cara joins Lightfoot the unicorn in the search for the Unicorn Queen Arabella Skydancer.
Dr. Ernest Drake calls on his two newest students, twelve-year-old Daniel and his sister, Beatrice, to help protect the precious Dragon's Eye jewel from the evil dragonologist Ignatius Crook.
Tom Tomsky, a timid nine-year-old, reluctantly agrees to help professional ghostbuster Hetty Hyssop find the Incredibly Revolting Ghost that is haunting the Averagely Spooky Ghost hiding out in Tom's attic.
Hubie struggles to decide on a project for the science fair, weighing the pros and cons of cloning himself or creating a laugh machine. Contains science-related jokes and puns throughout the story.
Eric, Neal, and Julie return to Droon to fix the mess they made with the Wand of Urik and wake the famous Knights of Silversnow to fight the evil Lord Sparr.
After the warrior cat Clans settle into their new homes, the harmony they once had disappears as the clans start fighting each other, until the day their common enemy--the badger--invades their territory.
Pursued by the sinister Dr. DeWilde and his ravenous wolves, three sisters--Storm, the inheritor of a special musical pipe, the elder Aurora, and the baby Any--flee into the woods and begin a treacherous journey filled with many dangers as they try to find a way to defeat their pursuer and keep him from taking the pipe and control of the entire land.
Fireheart, the warrior cat, faces many challenges in his new role as ThunderClan deputy, with his apprentice resisting the warrior code, the clan leader weakening, and his sworn enemy Tigerclaw continuing to haunt the forest seeking revenge.