How much can we ask two souls to sacrifice when millions wail for freedom? In the not-so-distant future, Earth's power is absolute, imposed on the settled worlds by her Hammer hordes—soldiers drifting across space and time, conquering all who forget their place. When Arch Ariel, a loyal and brutal Hammer plagued by his miserable childhood, leads his squad against the distant and mysterious Casia, at the heart of all the death and destruction, he stumbles upon a fierce child. Triggered by a strange spark, Arch steps in to spare her from his kin, but only after the slaughter of her entire family dooms Elyse Silver to eternal hate and violence. While Earth struggles to seal Casia beneath her boot, two times Arch will flee her fate, and two times Elyse will bring him back. Because below Casia's violet seas, a secret yearns to break free. An engine that feeds Elyse's rage and compels Arch to stand for people he never swore to protect; an engine that pulls them apart, only to bring back together on Casia, when space and time have made them the same age, igniting their mystical bond, despite the darkness each breeds. Meanwhile, Earth’s conquered worlds await if within the deceit, pain, and destruction ahead of them, Arch and Elyse can find one another, and turn Casia into the revolution millions crave...