Being a typewriter is not as easy as it looks. Surrounded by books (notorious attention hogs) and recently replaced by a computer, Olivetti has been forgotten by the Brindles—the family he’s lived with for years. The Brindles are busy humans, apart from twelve-year-old Ernest, who would rather be left alone with his collection of Oxford English Dictionaries. Once a collector of words, now Olivetti only collects dust. He gets a rare glimpse of action from Ernest’s mom, Beatrice—his used-to-be frequent visitor—only for her to drop him off at Heartland Pawn Shop and leave him behind.

Fern’s lived at the Ranch, an off-the-grid, sustainable community in upstate New York, since she was six. The work is hard, but Fern admires the Ranch's leader, Dr. Ben. So when Fern’s mother sneaks them away in the middle of the night and says Dr. Ben is dangerous, Fern doesn't believe it. She wants desperately to go back, but her mom just keeps driving. Suddenly thrust into the treacherous, toxic, outside world, Fern thinks only about how to get home again.

Johannes, a free dog, lives in an urban park by the sea. His job is to be the Eyes—to see everything that happens within the park and report back to the park’s elders, three ancient Bison. His friends—a seagull, a raccoon, a squirrel, and a pelican—work with him as the Assistant Eyes, observing the humans and other animals who share the park and making sure the Equilibrium is in balance. But changes are afoot. More humans arrive in the park. A new building, containing mysterious and hypnotic rectangles, goes up. And then there are the goats.

"You are to report to Station X at Bletchley Park, Buckinghamshire, in four days time....That is all you need to know." This was the terse telegram hundreds of young women throughout the British Isles received in the spring of 1941, as World War II raged. As they arrived at Station X, a sprawling mansion in a state of disrepair surrounded by Spartan-looking huts with little chimneys coughing out thick smoke—these young people had no idea what kind of work they were stepping into. Who had recommended them? Why had they been chosen? Most would never learn all the answers to these questions.

When a mysterious little free library (guarded by a large orange cat) appears overnight in the small town of Martinville, eleven-year-old Evan plucks two weathered books from its shelves, never suspecting that his life is about to change. Evan and his best friend Rafe quickly discover a link between one of the old books and a long-ago event that none of the grown-ups want to talk about. The two boys start asking questions whose answers will transform not only their own futures, but the town itself.