When Annie, her mother, and baby brother move to a new home, they have a lot of work to do, but Annie finds joy at the house of a neighbor who plays piano.
While spending the summer in a New England coastal town with another family, Kate sees the ocean for the first time, takes a challenging drawing class, and buys a mysterious painting.
When fourth-grader Gregory releases a helium-filled balloon into the sky with his name and address attached, it leads to an unusual friendship and an exchange of mystery gifts.