Juni lives in a world without books. The Blight killed off all the trees, and since then, paper is worth more than just about anything else. Juni’s parents were killed in an archeological dig when she was young, so now it’s just her and her Grandpa Edgar, trying to survive. When she’s not in school, Juni and her friends Doler and Quaze turn to plifting—scavenging in abandoned buildings for any scrap of paper they can find—to earn a little money. If Juni can find enough paper, she can pay for the expensive health care Grandpa needs.

Summer, 1940. Nineteen-year-old Jakob Novis and his quirky younger sister Lizzie share a love of riddles and puzzles. And now they’re living inside of one. The quarrelsome siblings find themselves amidst one of the greatest secrets of World War II—Britain’s eccentric codebreaking factory at Bletchley Park. As Jakob joins Bletchley’s top minds to crack the Nazi's Enigma cipher, fourteen-year-old Lizzie embarks on a mission to solve the mysterious disappearance of their mother.

It's August 1999. For twelve-year-old Michael Rosario, life at Fox Run Apartments in Red Knot, Delaware, is as ordinary as ever—except for the looming Y2K crisis and his overwhelming crush on his sixteen-year-old babysitter, Gibby. But when a disoriented teenage boy named Ridge appears out of nowhere, Michael discovers there is more to life than stockpiling supplies and pining over Gibby.

Yash is the best athlete at Robinette Middle School—so good, in fact, that he’s already playing on the high school’s JV sports teams. Imagine his shock when he learns that his JV practices have kept him from earning a state-mandated credit for eighth-grade PE. To graduate, he has to take Physical Education Equivalency—PEE, also known as “Slugfest”—in summer school.

The day that Christopher saved a drowning baby griffin from a hidden lake would change his life forever. It’s the day he learned about the Archipelago—a cluster of unmapped islands where magical creatures of every kind have thrived for thousands of years, until now. And it’s the day he met Mal—a girl on the run, in desperate need of his help. Mal and Christopher embark on a wild adventure, racing from island to island, searching for someone who can explain why the magic is fading and why magical creatures are suddenly dying.