Being a teenage vampire in a human family isn't easy, especially in a city where harboring any monster subspecies is illegal. When Everett is injured attempting to save a werewolf, she takes him to the Monster Asylum, a place that shouldn't exist, and introduces him to a world of acceptance and possibility. Dark creatures begin to plague the five cities. Everett's ability to fight against them makes himirreplaceable if the human world that fears him can accept a vampire as a hero.