In a ruined, nameless city of the future, Rachel makes her living as a scavenger. She finds a creature she names Borne entangled in the fur of Mord, a gigantic despotic bear that once prowled the corridors of a biotech firm, the Company, until he was experimented on, grew large, learned to fly, and broke free. Made insane by the company's torture of him, Mord terrorises the city even as he provides sustenance for scavengers. At first, Borne looks like nothing at all - just a green lump that might be a discard from the Company, which, although severely damaged, is rumoured to still make creatures and send them to far-distant places that have not yet suffered collapse. Borne reminds Rachel of the island nation of her birth, now long lost to rising seas. She feels an attachment that she resents: attachments are traps, and in this world any weakness can kill you