This flock has endured a turbulent upbringing and they have been continually faced with evil. Evading capture on a daily basis, they have endured torture and been pushed to the very brink of sanity. Hunted all their lives, they've had to fight life-threatening and belief-defying battles pitting their strength against the fearsome force of their shadowy enemies. But as their predators evolved, their unique ability to fly is no longer enough to save them.

With their genes mutating to astonishing affect, the flock establishes a new set of skills to unleash as they strive for survival. But just as they struggle to get to grips with these physical changes, emotionally they face new challenges too: life on the fringe of society can be a lonely existence.

Driven to the wastelands of Antartica, each day brings a new threat for the flock. Danger is never far away and while fighting to save their own skin, they have a new mission to undertake - one with devastating global consequences...