What is the prequel to Perdida?

Excuse me, could you clarify for me what the prequel to "Perdida" is? I've heard so much about this popular series, but I'm not sure if there's a story that precedes the main narrative. Is there a separate book, short story, or even a movie that serves as a backdrop or introduction to the world of "Perdida"? If so, I'd love to know more about it and how it ties into the main plot. I'm quite intrigued by the concept and would appreciate any insights you can offer.