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, the kingdom experiences a drought. Medialuna, Chaca and Petunia decide to find out what is going on. Yagua tells them about the Big Rain Drum. She says if they find it then they could use it make the rain return. But the drum is missing. Gualichu took it, and she is using her power to stop the rain.