Iris Colarradiante lives in Bosque Destellos, where lots of other magical creatures live. Iris and the other unicorns learn about dragons at school, but they have never seen them before. That is, until now! A blanket and a pair of glasses go missing from school, and the clues lead to the dragon caves! Will Iris and the other unicorns meet a scary creature there? Or will they make a brand-new friend?

Originally published as Unicorn Diaries #2: Bo and the dragon-pup.