When Special Agent Cailin McKenna and her National Investigation and Protection Unit partners are drawn into an investigation surrounding a pair of school shootings in the Twin Cities, it soon becomes obvious that there's more to it than meets the eye. A hate group is recruiting teenagers on school grounds with metal music rife with violent messages, all while plotting a massive terrorist offensive on a major Twin Cities venue.

It gets personal when Cailin's brother is stabbed and the attack is linked to their case. And how can Cailin possibly maintain her fiery new relationship now...