Every night, the people of Oculus take refuge in the cities as the stars fall from the sky to settle upon the fields. Those unfortunate enough to be caught outside the city walls either die excruciating deaths when touched by the lights or are found the next morning wandering and dazed. Not long after being found, those who survive the night die from a strange fever.
Veleno is a skilled soldier and adoptive son of Alvisio, the Head of the Royal Guard. He has never questioned the existence of the falling lights. Given the violent upbringing he received from his father, he has spent his days more concerned with avoiding Alvisio's anger. His only pleasure is daydreaming about the Jewel of Throne; a woman named Piera who is responsible for keeping the lights away from the city.
When he is assigned to Piera's guard, he learns there is a sinister truth behind the lights and the cities' protections from them. No longer a willing servant, Veleno must fight to survive and discovers he must defeat the man who most terrifies him if he ever hopes to save himself or those he loves.