Andy's world explodes when a fresh-faced university student is caught in the crossfire during a random concert shooting. Devastated by the seemingly senseless act of violence, she sets out to unravel the motive and track down the shooter -- putting her in direct conflict with Division 15's new detective, Jo Rosati. Meanwhile, as Rosati investigates her own angle on the concert mayhem, sparks fly between her and her former partner, Detective Luke Callaghan.