As the Fifth Sphere Expansion continues to annex Imperial worlds on the galactic fringe, fewer and fewer planets are acquiescing peacefully to the change in leadership as the T’au Empire heads deeper into human space. Pockets of resistance are a constant thorn in their side, and one such insurrection threatens to overwhelm the recently acquired world of Cao Quo in Elemental Council – a new Warhammer 40,000 novel written by Noah Van Nguyen, author of The Godeater's Son and Yndrasta: The Celestial Spear.