After finding out that the Deathsinger is his father, Senn flees with Oris to the Knights of Ardonia. Abigail and the Enderknights unite, Null and Enity 303 look for Felden survivors, Lucan looks for the Necrolord with the insider, and the Knights of Ardonia join the fight, with a friend as their leader, someone long dead. With the Second Great War in full swing, it is a race against the Deathsinger to find the Prime Songs before he does, but will they succeed?

During the tournament, Ingressus reveals himself as a Voltaris, but is turned down. Just before he is taken away, Achillean finds the courage to speak up for his brother.

They say the hero will always make sacrifices in the heat of battle. Achillean Nestoris made the greatest sacrifice. He became something unrecognisable, something unredeemable. What Prime Songs did to the mind of the Deathsinger bears no comparison to the monster that the Tidesinger became when he saw no other way of winning the Great War than to wield the Aggressium Prime Song, himself. What he did afterwards is a tale untold for too long - the Tidesinger's greatest secret...