When Balle Prime is engulfed by a savage ork invasion, the forces of the Imperium arrive to destroy the greenskins and restore order to the world. The Imperial Navy launch bomber wings to wreak havoc upon the invaders, amongst them The Emperor’s Grace. Captain Mikal Bernd and his crew embark on a mission to destroy a vital ork fortification. But with ork fighters on their tail, will they survive for long enough to complete their mission? A Militarum Tempestus story by Nicolas Alexander