From bestselling author and winner of the Blue Peter Book Award, this is the sixth adventure set in the world of Podkin One-Ear. After capturing Charice, there is only one spirit left for Uki to find: Mortix, the most dangerous of all. With his friends Jori, Cole and Kree, Uki heads to Eisenfell - the greatest city in Hulstland - only to find that Mortix has taken control of Emperor Ash and is plotting to conquer the whole Five Realms with her terrifying army.

Uki must dodge the Endwatch, the Shrikes, Clan Septys and the guards and find a way to complete his quest before all is lost.