It’s the summer before fifth grade, and for Ferris Wilkey, it is a summer of sheer pandemonium: Her little sister, Pinky, has vowed to become an outlaw. Uncle Ted has left Aunt Shirley and, to Ferris’s mother’s chagrin, is holed up in the Wilkey basement to paint a history of the world. And Charisse, Ferris’s grandmother, has started seeing a ghost at the threshold of her room, which seems like an alarming omen given that she is also feeling unwell. But the ghost is not there to usher Charisse to the Great Beyond. Rather, she has other plans—wild, impractical, illuminating plans.

Siblings Alex and Zoe Sherlock take their last name as inspiration when choosing a summer job. After all, starting a detective agency has to be better than babysitting (boring), lawn mowing (sweaty), or cleaning out the attic (boring and sweaty). Their friends Lina, an avid bookworm, and Yadi, an aspiring cinematographer, join the enterprise, and Alex and Zoe’s retired reporter grandfather offers up his sweet aquamarine Cadillac convertible and storage unit full of cold cases. The group’s first target is the long-lost treasure supposedly hidden near their hometown Miami.

Nina is used to feeling like the odd one out, both at school and in her large family. But while trying to fit in at summer camp, she discovers something even more peculiar: two majestic birds have built a nest in the marsh behind an abandoned infirmary. They appear to be whooping cranes, but that’s impossible—Nina is an amateur bird-watcher, and all her resources tell her that those rare birds haven’t nested in Texas for over a hundred years. When Nina reports the sighting to wildlife officials, more questions arise.

Detectives' Row is full of talented investigators, but Toby Montrose isn't one of them. He's only an assistant at his uncle's detective agency, and he's not sure he's even very good at that. Toby's friend Ivy is the best sleuth around—or at least she thinks so. They both see their chance to prove themselves when the famed Hugh Abernathy announces a contest to choose the world's greatest detective.

Ivan is an easygoing gorilla. Living at the Exit 8 Big Top Mall and Video Arcade, he has grown accustomed to humans watching him through the glass walls of his domain. He rarely misses his life in the jungle. In fact, he hardly ever thinks about it at all. Instead, Ivan thinks about TV shows he's seen and about his friends Stella, an elderly elephant, and Bob, a stray dog. But mostly Ivan thinks about art and how to capture the taste of a mango or the sound of leaves with color and a well-placed line.