Dory, a highly imaginative youngest child, has to wear an ugly coat to school, must play quietly with a friend, battles her imaginary enemy, and celebrates her first loose tooth.
When orphaned Katherine learns that the teeth collected by the scorned Tooth Fairy contain memories of childhood, she enlists the help of the Guardians to get her tooth back and remember her parents.
Unhappy to be the only one in his class who still has not lost a tooth, first-grader Freddy tries to find a way to expedite matters but then is faced with another problem.