The final battle for Earth has begun.

As the alien entity known as The Harbinger arrives, the truth behind the planet’s transformation is revealed. Declaring Earth a failed experiment, the Harbinger begins reshaping the planet—erasing cities, species, and civilizations in preparation for a new cosmic design.

With extinction looming, Koa unites humans, hybrids, and kangaroo warriors for one last stand against the alien force threatening their world.

But victory will demand sacrifice.

As betrayal spreads and hope fades, Koa must make the ultimate decision—one that could save the planet, but cost everything.

When the battle ends, Earth will never be the same.

And the legend of the Rise of the Kangaroos will echo long after the war is over.