Concord is an ancient galactic federation that keeps the peace within the Milky Way. But its complacence is shattered when a force from outside the galaxy invades with no warning at all, armed with deadly spaceships wielding super-weapons impervious to any defense.

As ship after ship falls to the invaders, their plan becomes clear: wipe out Concord's defenses and then begin exterminating and enslaving the homeworlds. Concord's only advantages are the Pilots, who can navigate more quickly and accurately than the invaders, and a human woman with an instinct for tactics: Emma Fuji, the oldest human who ever lived.

When Emma realizes that Concord has a natural ally in this fight, their request for help produces not just the shock of their lives?it's the biggest surprise in four billion years.

But if Concord manages to win this fight, what will it become? Will it still be a galactic peacekeeper, will it slide into tyranny and become the thing it has vowed to destroy?or will it find a new mission?

Packed with suspense, epic battles, and an unexpected love story, Concord: Invasion is the thrilling sequel to Concord: Sabotage.