In the dark future of the 41st millennium, the Imperium fights a desperate battle for mankind's survival amongst the stars. Foremost among its protectors are the Space Marines, genetically engineered superhumans trained to be the ultimate warriors. And of all the Space Marines, it is the noble and courageous Ultramarines who best embody this warrior ideal. When the planet of Black Reach is invaded by a mighty ork horde, the Ultramarines must act fast - if the greenskins gain a foothold in the sy...