Marco and the Deuces are deployed on the front lines of a war with the Ringer Clans, a collection of brutal warriors who blame MEC for the mutant attacks on their worlds. In a series of costly, epic engagements, Marco finds himself in the middle of a biological arms race as each side tries to develop the perfect soldier. But Marco, Hotshot, Meatball, and his other comrades try to be true to themselves as the war, and the serum they’re forced to take, erodes who they are. Time to power up and roll out for the Cygni Corps in Book 2 of this science fiction thrill ride!