In the mythical city of Pava, magic is outlawed and street gangs rule the night. It's up to the newest dragon-keeper to keep her companions safe.

In the oppressed city of Pava, Petra, a fatherless girl, and the dragonka she has taken under her wing are pulled into a resistance movement, led by a gang of orphans called the Blackhearts, that defies the new child dictator's rule.