Just as the Rats of the South start to piece their lives together, following the great war between Rodent and Frog, an old and unspeakable evil stirs in the North; wings black as death; fangs sharp as steel; and a thirst for blood rivalled only by their insatiable hunger… for vengeance. As Arlo, young heir to the Warden of the Wastes, journey through the vast, snow-ravaged lands of the North in an epic quest to overcome the Dark Wings once and for all. Hunt down giant beasts. Unite disparate clans. Upgrade your settlement. And discover a terrible secret of blood and crown… The time for heroes is over. For the Kingdom needs a warrior; forged of the North and as cold as the snow that shrouds these lands. A rat… carved from iron... And so, a new tail begins.