Warhammer 40k - Sanctus Reach: Evil Sun Rising by Guy Haley

SANCTUS REACH
The Red Waaagh! descends on the world of Alaric Prime, intent on plunging the sector into war. The beleaguered Imperial forces of the planet prepare to sell their lives dearly to drive back the alien tide.

THE STORY
As the Red Waaagh! engulfs the Sanctus Reach, orks flock to Warlord Grukk's banner, Big Mek Uggrim and his Red Sunz among them. But even with plenty of humans to kill, the orks can't help fighting amongst themselves, encouraged by the psychotically unstable Grukk. The Red Sunz soon finds themselves having to contend with the attentions of Mogrok, another Big Mek who covets Uggrim's creations. Beset by conflict with the Imperium, their rivals and each other, the Red Sunz prepare for the fight of their lives.