Stranded on a world ravaged by plague, Grant McCoy realizes that every dimension they've passed through has been devastated by Pillar technology. Even as Grant tries to reclaim the Dimensionaut credo 'Leave every world better than how we found it,' his team threatens to tear itself apart from within. With the timer to the Pillar's final jump ticking down, Grant risks losing everything he's fought to protect while fighting to save a world that isn't even his own.