The Faergrowe Principle

In a world recovering from a near-apocalyptic war, scientist Allison Heartridge searches for a missing friend. Enlisting the help of a contract killer, she traces the demise of the Church of the Ascension, a cult that had taken her friend in. As the trail takes her out of the comfort of New Oak City to the violent wastelands of the desert and the crumbling nation of Matterfoss, she unravels a shattering connections between her friend's disappearance and the Substance Engine they created together.