FBI Agent Austin Drake is ambushed at a fall fair moments before a bomb detonates. For Austin, this is no random act—it's a personal message, especially since the attacks mirror the work of a criminal he put away years ago. Detective Melody Rust and her K-9 partner are on the scene to help, but it quickly becomes clear this is just the beginning of a targeted assault. With a toddler son to protect, Austin must work with Melody to unmask an enemy with a lethal agenda, before everyone becomes collateral damage.