Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best - acting silly and being adored. They’ve been a happy family, just the three of them and their mom. But everything changes when reports of three kidnapped children reach the Greystone kids, and they’re shocked by the startling similarities between themselves and these complete strangers. The other kids share their same first and middle names. They’re the same ages. They even have identical birthdays. Who, exactly, are these strangers?

Every year the people of the Protectorate leave a baby as an offering to the witch who lives in the forest. They hope this sacrifice will keep her from terrorizing their town. But the witch in the forest, Xan, is kind and gentle. She shares her home with a wise Swamp Monster named Glerk and a Perfectly Tiny Dragon, Fyrian. Xan rescues the abandoned children and delivers them to welcoming families on the other side of the forest, nourishing the babies with starlight on the journey.

When the coronavirus hits Hong Kong, ten-year-old Knox Wei-Evans’s mom makes the last-minute decision to move him and his siblings back to California, where they think they will be safe. Suddenly, Knox has two days to prepare for an international move—and for leaving his dad, who has to stay for work. At his new school in California, Knox struggles with being the new kid. His classmates think that he must have brought over the virus. At home, Mom just got fired, and Dad doesn’t even know when he’ll see them again, since the flights have been cancelled.

When robot Roz opens her eyes for the first time, she discovers that she is alone on a remote, wild island. Why is she there? Where did she come from? And, most important, how will she survive in her harsh surroundings? Roz's only hope is to learn from the island's hostile animal inhabitants. When she tries to care for an orphaned gosling, the other animals finally decide to help, and the island starts to feel like home. Until one day, the robot's mysterious past comes back to haunt her....

In the dead of night, a truck arrives in Slaughterville, a small town curiously named after its windowless slaughterhouse. Seven mysterious kids with suitcases step out of the vehicle and into an abandoned home on a dead-end street, looking over their shoulders to make sure they aren't noticed. But Ravani Foster covertly witnesses their arrival from his bedroom window. Timid and lonely, Ravani is eager to learn everything he can about his new neighbors: What secrets are they hiding? And most mysterious of all...where are the adults?