Mercury Hale is on the warpath. His nemesis Alexander Arkwright has stolen an artifact of immeasurable power, one that threatens Earth and every world connected to the Interstice. Even when Mercury rescues his friends from torture, he's left scrambling to prevent San Camillo from shaking to pieces. But Arkwright isn't alone. He has forces both open and secret around Syndax Multinational, massed against Procyon, ready to take down the organization once and for all - and leave Mercury questioning who can be trusted. No matter what he does, or how hard he fights, Mercury can't stop Syndax. His last chance? Build a team. Lead them in the fight. And hope that they're not too late to prevent a cataclysm.