The Sylvains face their own collapse in a world in which men are increasingly hostile to them. Dumn's emperor decides to end the elves of Torunn that have been challenging him for too long. Among the Sylvains, the Kisha is wreaking havoc and those who smoke it are only the shadow of themselves. In Dumn, the emperor manoeuvres to convince the Men to enter the war against the Elves. The master ogham Alorenn, aware of the threat, tries to unite the clans but he encounters his own. She will receive hopeless help in the person of Ora, the former carrier of the green crystal.