Medialuna, the little princess, has been bewitched by the powerful witch Gualichu and cannot sleep at night. While everyone else in her kingdom sleeps, Medialuna travels into a world of witches, princesses, monsters and fantastic creatures from legends and myths. She shares with them great deeds and reveals tangled mysteries until dawn. In this episode, Medialuna and her friends are looking for new adventures in the jungle. They discover Gualichu experimenting with a new spell that can shrink and enlarge things. Gualichu discovers the intruders, she reduces Medialuna to the size of an apple and then takes her to her cabin.