With her murderous daughter, Medea, banished to the spirit world, Queen Thirrin's tiny kingdom of Icemark has enjoyed a time of peace. But her consort, Oskan Witchfather, fears for their nation - and rightly so. Medea is out for revenge. Allied with the King of the Darkness and his terrifying Ice Demons, the power of evil grows stronger day by day. The dark is rising and the Icemark and its allies must stop it.