"Henry, Frances, and Lukas are neighbors, and they used to be best friends. But in middle school Frances got emo, Lukas went to private school, and Henry just felt left behind. When they come together again for the funeral of a pet gerbil, the three ex-friends make a mindblowing discovery: a radio, buried in Henry’s backyard, that allows them to talk to another group of kids in the same town...in the same backyard...eighty years in the past. The...