When Harleen Quinzel scores an internship in a psych lab at Gotham University, she's more than ecstatic; she's desperate to make a Big Scientific Discovery that will land her a full-ride college scholarship and get her away from her abusive father. But when Harleen witnesses the way women are treated across STEM departments--and experiences harassment herself--she decides that revenge and justice are more important than her own dreams. Harleen finds her place in an intoxicating vigilante girl gang called the Reckoning, who creates chaos to inspire change. And when Harleen falls for another girl in the gang, it finally seems like she's found her true passions. But what starts off as pranks and mischief quickly turns deadly as one of the gang members is found murdered--and a terrifying conspiracy is uncovered that puts the life Harleen has worked so hard for at stake. Will she choose her future--or will she choose revenge?