Lou is the last loose baby tooth in the mouth. All of the other teeth take the plunge, one by one, into the great unknown. These charismatic teeth have creative ways of falling out. The front teeth go first, always wanting to be the center of attention. It's not long before a rotten tooth is pulled by the dentist. One falls out in the bath and another in the museum. Lou is determined never to leave the mouth and stay exactly where he is until... the BORING adult teeth move in. When Lou finally decides he's had enough, he goes with the Tooth Fairy to the Land of Teeth, where all his friends are waiting for him.