Rise of the Unmaker Future - Dusk of Uncreation - The Eridon Chronicles, #8

Prompted by the evil Cult of the Unmaker, Eridon's megalomaniacal ruler starts a war with the Etiran Empire. Adelrid Merylon then needs little encouragement to enforce martial law on Eridon and her colonies so he can round up his enemies. All the half-castes and their friends are forced into hiding. Only those who agree to join the Cult of the Unmaker are spared. Even Kamrys and his followers are attacked and only the Peacemaker, his family and Delsaron manage to escape.
With the full might of the cult of Necronis behind it, Galactic Order forces soon decimate the Etiran battlefleets. Adelrid believes he will soon rule supreme. However the Cult of the Unmaker has an ulterior motive for helping. It is seeking something called 'The Jewel of Etiros'. The Etirans believe this refers to their Empress, the Glorious and Dreadful Nattanru. While Omadon and his friends journey to Etiros to try and put an end to the war, Rhys and Kamrys work to bring down Adelrid on Eridon.
Then Omadon and his friends discover that the Jewel of Etiros is actually a third Crystal, needed to finally free Necronis from his Pit of Dark Flame. As the Chosen Sons of Eridos, can Rhys and Kamrys stop the Dark God Necronis the Unmaker from finally emerging and bringing about the total and utter destruction of the universe?