Per her 537 rules, Harper Campbell keeps her life tidy - academically and socially. But the moment Sterling Lane transfers into her tiny boarding school, her twin brother gets swept up in Sterling's pranks and schemes and nearly gets expelled. Harper knows it's Sterling's fault, and to protect her brother, she vows to take him down. As she exposes his endless school violations, he keeps striking back, framing her for his own infractions. Worst of all, he's charmed the administration into thinking he's harmless, and only Harper sees him for the troublemaker he absolutely is.