Books in the Strata Saga series

Strata - collective term for different species with higher intelligence, living in parallel like layers of rock; also used to denote fenstrata, a mythological race When Bryn Nightstar, the village outcast, meets a mysterious noblewoman on the road, he and his sister, Katrinara, embark on a journey to the capital city of Sterling with the lady Elle. Little do they know their destiny awaits. A gripping tale of magic, love, betrayal, and the union of species, as Bryn sets out to find a way for the human race to reach the planet Caramos before the world comes to an end.