Leahy's antibully demeanor gets put to the ultimate test when a notorious offender, slyly roaming her middle school campus, discreetly preys upon the ones dearest to her.

Now, tonight, during the biggest school event in Radium Summer's history, The Radium Summer's Carnival, whispers of danger turn into a chilling reality, and those around her fall into the predator's grip, as Leahy must outwit the monster hiding in plain sight-or watch her world crumble.

In a deadly game of cat and mouse, courage clashes with cunning... but not everyone's destined to escape unscathed.