Monkey has a big box, which he tells Cake has a cat inside, but only when the box is closed; Cake suggest that maybe it is a dinosaur instead, and the two friends puzzle over how they can solve the problem of finding out what is in the box, if it is always empty when opened.

Monkey is upset because he has lost a tooth, so Cake tries to make him feel better by telling him about the Tooth Fairy--but Monkey just wants his tooth named Kevin.