The war has gone silent, but the battle has just begun. Six months after David's victory over the Spectre, a fragile peace has settled over the city. But it is a peace poisoned from within. A new, invisible weapon from OmniCorp is turning the hearts and minds of the rebellion, spreading a virus of despair that calls for surrender. David, his connection to the machines severed, is a hero without a purpose. To save the Alliance, he must become a different kind of ghost—a scavenger of data, hunting for a signal in the noise. His investigation leads him to an impossible the ghost of the Shepherd's past has returned, and she is OmniCorp's perfect weapon. Now, David must fight a new war on two fronts. He must counter the mind virus that threatens to tear the rebellion apart, while also preparing to face a legendary pilot he was never meant to fight. To win, he must embrace the one part of himself he thought he'd left the cornered rat who knows that when the rules are broken, the only thing that matters is survival.