At the end of a long and bloody road, the armies of the Farsight Enclaves stand poised to secure final victory over the Ork hordes. As Commander Farsight's audacious attack reaches a critical stage, an Ark of Omen and its attendant Balefleet erupt from the warp to shatter the balance of the conflict. Thrown into a desperate fight for survival amidst a furious three-way war, the T'au are driven to take desperate measures. Their fighting retreat sees them forced to make planetfall on a world that O'Shovah vowed never to set foot upon again. With all other options exhausted, and foes closing in on all sides, the T'au begin a hit-and-run battle amongst the lifeless wastes and eerie ruins of Arthas Moloch itself.