As soon as Xander Whitt entered the Compound, he no longer existed. Alongside nine other adolescent prodigies, he would be forged into the US government's deadliest weapon - no matter the cost. Five years after Project Sparta, Xander hunts a rising terrorist, code-named Agent Zero, who is plotting an attack on Washington, DC. With the clock ticking, Xander and his fellow recruits must play Agent Zero's game of cat and mouse to stop the attack before it is too late. But when the Spartans discover Agent Zero is one of them, who can Xander trust?