Everthorn: The Crimson Prophecy:

The war has left both the vampire and werewolf clans in chaos. With their love now public, Kael and Lyra must lead a new, fragile alliance, but a temporary peace is all that stands between them and total destruction. A new, far more dangerous threat looms from the shadows: Queen Malvina, who orchestrates a final, devastating war from her hidden lair.

To defeat her, Lyra and Kael must embark on a final quest to find two ancient, forgotten artifacts—the Soulstone of the werewolves and the Suns...