All his life, Sixth of the Dusk has been a traditional trapper of Aviar - the supernatural birds his people bond with - on the deadly island of Patji. When invaders from the stars threaten to exploit his world's unique resources, Dusk is drawn into a desperate mission that takes him beyond the boundaries of his planet and into the Cognitive Realm itself. Expanding upon Sanderson's novella Sixth of the Dusk (included as flashback chapters, so no prior reading is required), Isles of the Emberdark is set during a pivotal moment in the Cosmere's future - when the great powers of Scadrial and Roshar are reaching outward to other worlds. A story about colonialism, tradition, and what is lost when cultures collide with technologically superior forces.