Shortly before her thirteenth birthday, shy and withdrawn Tara is sent to stay with her aunt, uncle, and cousin in her parents' hometown of Willow Falls, where she makes friends and becomes involved with an elderly buyer and seller of collectibles, who seems to be trying to give Tara some kind of mysterious message.

Rocket the dog is excited about the 100th day of school and enlists the help of his friends to collect one hundred special things to bring to class, from heart-shaped stones found with Mr. Barker to feathers Owl provides, but will he find enough items in time?