Tales of Piecora - The Emerald Cave - The Book of Urm, #1

Serpendis Endium, Master Merchant of Kannoniah and sole survivor of a disastrous trip across the unmappable Wildlands visiting the Banwar east of Sienja, only wished to return home to his warm bed, but not until he found something – anything – valuable to at least justify this whole hell-rotten adventure besides his own soiled robes. But here in the chaotic Wildlands, his only chance of survival depended on his newly acquired Sienjan Guide, Piecora Tiorold, whom he despised despite her expertise in navigating the Wildlands better than anyone else in the world.

Things were going smoothly until the old, wealthy curmudgeon wandered into a forbidden cave and discovered the cursed emeralds, waylaying their journey into a hair-raising, reality-hopping, high-stakes adventure that neither of them asked for. But through grim determination, self-discovery, and the bonds of friendship old and new, they and others they meet along the way learn that the only way home is through a bargain with the Aeonwyrm of Kiahalla to save the Undying Lands of the Eldar from a powerful sorceress who has found the secret of intentional navigation between the planes of reality, threatening the very existence of humankind.