Introduction: It is the year 990 AC. Earth is dead, forever claimed by the Calamity. Stars are unreachable, forever denied to human ambition. The surviving humans inhabit cylinder habitats, hollow worlds constructed inside moons and asteroids, and worship the very technology their ancestors created.Zenya was a healer, one of the few people dedicated to lessening harm rather than inflicting it. But after losing her home, her family and her freedom, the young physician needs to reassess her principles and try to survive among the cold, alien, ruthless people of Vesta....