Five years after Don Vargas' disappearance in the alternate reality of the Valle Abajo after he brought down The Tower of Il Serrohe, his sixteen-year-old cousin, Esther, living in the Rio Grande Valley, suffers a mysterious accident and begins having strange dreams.
Nightwing-the wily bat who brought Don to the Valle Abajo-tells Esther of the return of the evil Soreyes. After sharing these details with her best friend, Markey, they both wonder if she is losing her mind.
Astounding news upon her return from visiting the Valle Abajo through the portal in Don's casita convinces her to take on the new quest using her intelligence and resourcefulness against the Soreyes.
New dangers threaten with rumors of evil in the far away Mountains of Sky and beyond the western horizon. Meanwhile, a mysterious presence makes itself known.