In a future where humanity is a refugee species, can refugees from the past save us? The pneumavores ("soul eaters") have taken the earth and have spread to every planet humanity has ever touched. Now a Syrian refugee, a thirteenth-century librarian, and a hijabi shapeshifter from the far future must travel across space and time to defend humanity from this intergalactic and devouring evil. They'll find allies: A wheelchair gunslinger...