On an errand to find his brother, Tyrus is snatched to an other-worldy place, leaving him tasked with a quest to find an unknown girl and meet her in a far away city. Meanwhile, in the tree village of Alartha, mysterious bark-clad warriors appear out of the forest and slaughter the residents forcing the young novice magical practitioner, Pernille, to flee for her life.
Their different journeys to reach Marithapor are full of encounters and people who are essential to the fulfilment of Tyrus's quest and serve as an anvil to forge the start of the secretive Moth's becoming. Of a Feather gives us a world full of power and the struggle to retain it as a mysterious race tries to plunder their world and sap them dry.