Inspired by her late grandmother, thirteen-year-old Nina spends a summer secretly doing good deeds for her neighbors and enjoying the changes she brings about, even as she is dealing with changing friendships and family issues.

Eleven-year-old Calli, the third child in a family of busy high-achievers, likes to take her time and observe rather than rush around, and when she meets an awkward, insecure second-grader named Noah and is paired with him in the Peer Helper Program, she finds satisfaction and strength in working with him.