The Walker brothers were created to be the perfect bio-enhanced soldiers, human guinea pigs for SIEGE Corporation’s Posthuman Project. In the years since the project imploded, they have fought to create normal lives for themselves. But SIEGE forges a dark path of experimentation and the Walkers remain the key to future breakthroughs.

Determined to end their torment, the brothers must put everything on the line. Face the enemy. Accept destiny. Save their souls.

Sometimes the past comes back to haunt us, sometimes it comes back to tempt us.