Junie, a spunky, sometimes exasperating, kindergartener, looks forward to winning lots of prizes at the school carnival, but a fruit cake was not exactly what she had in mind.

Everybody starts somewhere, and once upon a time Luigi Lemoncello was a thirteen-year-old boy in a large family who dreamed of being a showman; he gets his first chance working for a famous barker at a summer carnival where a mysterious puzzle leads him and his friends on a treasure hunt.

Tom the cat tries to impress his girlfriend at the local carnival, but much to his vexation, Jerry the mouse keeps thwarting Tom's plans.

The Treetopolis Summer Carnival is coming soon--with yummy food and games with prizes--and Eva can't wait. But when Eva hurts her wing in a game of wingball, she goes to the hospital, where she meets a new friend, Rocco, who has a broken leg. Now while wearing a sling for a week prevents her from writing in her diary, she turns to her friends and family in order to keep it up to date. And will Eva still have fun at the carnival?

Best friends Cornbread and Poppy spend a day at the Carnival playing games, eating snacks, and riding the Ferris wheel.