As the passionate and talented children of Damia and Afra Lyon confront the alien threat first detected by their grandmother the Rowan. Laria, Isthian, Rojer, and Zara Lyon share aspects of the telepathic, empathic, and telekinetic powers that have marked their family for generations. But as the family expands, it is clear that not all talents are alike: each of the four young Lyons has a very personal kind of ability. When they join forces together, as will be required to destroy the deadly Hiver aliens, their powers and their deep family bond make them the most powerful fighting force the Human and Mrdini races can create. And the peaceful races of the universe need every ounce of power that the Lyon clan can muster.