rom the park one day when Noah sees a yellow bird with something in its beak. It is a message, and it's for Noah!

Mateo and his family have just moved into the neighborhood. Mateo has a yellow bird named Luna that he has trained to deliver messages. He notices Noah, and has Luna deliver a message to him.

The boys write messages to each other all day long, and Luna delivers them. What are they writing to each other? Will they become friends?