Un eco misterioso resuena en la noche. Los bebés apuntan a un dibujo en el suelo: un mapa parcial del bosque con un punto rojo titilante.

Incorporate elements of the forest's magic. Perhaps the forest is sentient or has other creatures. Roco's role is to assist them, maybe he's been waiting for them. Their personalities should contrast: Lía is determined, Leo is more curious. Roco is the wise, guiding presence.

"¿Dónde…? ¿Papá? ¿Mamá?"

"Hay más en vosotros de lo que creéis. Pero primero, debéis enfrentar a quien os trajo a este lugar... antes de que sea demasiado tarde."

Start the story with the babies in a forest clearing, maybe they arrived there by some magical means. The fox appears, offers help. They set off, meet challenges like crossing a river, a bridge guarded by a creature, hidden path that requires solving a riddle. Maybe the babies have innate magical powers they discover as they go.