Book Two in the young adult, Cornerstone Series.
There's a man-made storm coming, like a rip in the world, and it's called the Cusp. Struggling to fit into the destiny she's accepted, Nalena Maxwell has been left with one objective: she must find her murdered grandfather's Memory. Stolen and hidden away by her own father over seventeen years ago, the Memory could be the key to ending the Cusp and destroying the Ianua's rival community, The Fury. Driven by each individual's selfish desires, The Fury has always lacked the loyalty and organization it needs to be an actual force of power. Until now. Someone masterminded the Fury's massive attack on the Ianua, slaughtering twelve of their thirteen community leaders, the Addos. Now there are rumors that the 13th Cura, to which Nali belongs, has gone to the Fury, manipulating the last Addo in order to control the other 12 Curas. As the Cusp brings the Fury and their own communities against them, Nalena's Cura must preserve the Ianua, but finding the key to the Cusp isn't as simple as it seems.