Oath of Plague {Book 1}

Eris Lionbraid is a soldier of Bjorn, the largest country on the continent Fjorna. But it grows smaller each year, while the Forsaken Land grows larger. It's a dangerous, toxic area where nothing grows and monsters roam. Eris is sent out with a troop to find a way to stop it.

At the same time Imiria Morningsong, Eris childhood friend and former lover, sets out on an expedition to search for Orkatosk's urn. It leads her straight into the depths of one of Fjorna's dangerous forests.