Within the heart of an African utopia, a dreaded poison from a hundred years past oozes its way to the surface. Whether it is a curse or a living thing bent on its survival, it is known only as "the Infection", and as it spreads slowly across the beauty of nature, it shows no qualms of consuming the life of all it seizes in its putrid grasp and leaving them as nothing more than soulless husks.

It doesn't take long for Tenebra Zeta to hit the scene, hot off the heels of their European Invasion and still seeking answers for the disappearance of cult leader Cain. With the aid of local master of the winds Zahra Angani, the team sets out to purge the waste and return order to the sunlit savannahs before it claims one of the great beacons imbueing the planet with life.

But it is the waste itself that intrigues them the most, its dark and somehow familiar essence begging for its secrets to show themselves...