Siege of the Hive City

"FOR THE EMPEROR!", were the last words Magnate Vulka, Space Marine of the Angeli Imperatoris, said as he charged against the heretics. He managed to kill all but one. That was his undoing. But the Emperor is not done with him yet.

Magnate now finds himself in a new world, one without the taint of Chaos nor the Imperium of Man. How will our Space Marine fare in this world?

Cover art by M4Sherman.
This is my first story so expect some errors.
Warhammer 40k belongs to it's respective owner.
May be inaccurate or non-canon but hey it's my story.