Googol and Googolplex are on a mission to learn about Earth by collecting a number of items including a blackbird's song, snowballs and a chocolate bar. Pippa and Troy are happy to help, especially when they get to ride to the North Pole in a spaceship. But when they return, Martin, the bully next-door, sees something that he shouldn't.
Kate and Jake have always been best friends; always, that is, until Jake's cousin, Lionel, moves nearby and Jake starts spending time with him instead. Kate struggles with his abandonment and her own loneliness as she seeks new friends that share her likes and dislikes. And, perhaps there is a place in her life for her old best friend after all.
Jake loves to hunt for treasure, so when the famous pirate Captain Kidd asks him to be his cabin boy, he can't refuse. But Jake soon learns that bringing home an invisible pirate can be a real disaster, particularly when the pirate is mortally terrified of his teenage sister. There are many rules of the sea, and Captain Kidd's own cabin boy, Richard Barleycorn, teaches Jake how to face his biggest fear, Boris Baxter, the meanest boy in the whole school.
Nell makes two wishes on her birthday, but the next day they show little sign of coming true. Everyone in her household is busy and wants her out from underfoot and no one is willing to help her find her lost cat. In the end she finds more than a cat and she makes her own wishes come true with the help of a row of tall, bright, smiling sunflowers.
Kate is determined to win her spelling club's spelling bee, but the competition is fierce. She can almost put up with Violet's relentless claims of superior spelling ability, but when Kate and Jake begin to fight with each other, Kate is miserable. She wants to win the contest, but she doesn't want to lose her best friend.
Michael Maxwell McCallum lives in a world just like ours, but peopled by superheroes. When Michael's hero, Perfect Man, quits his job without warning, Michael isn't worried. He knows that Perfect Man will come back. He always does. So that September, when a new teacher shows up in his classroom, a teacher with a number of special powers, Michael figures it out right away. Mr. Clark is Perfect Man. Mr. Clark doesn't say yes and he doesn't say no to Michael's endless questions, but he does encourage Michael to find his own super powers.