Prologue
The planet of Matinkyl was a smallish planet with little traffic to rest of the Imperium. It was a farm planet that had enjoyed peace and quiet from the larger events that seemed to grip the galaxy every now and then. Yet beneath this calm façade was a ember glowing red with heat of insurrection. For within the planet was going start a great Heresy that could rip apart the sectors near it in fire and death.
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The Arch Heretic Halms rebellion was slowly gaining momentum. It was still hidden from the Imperials as they would surely send out a telepathic call for help and that could crush the dreams of Halm. His loyalists had started to infiltrate the local PDF and taking command of garrisons so that when the time came they would be ready to strike at the only large city on the planet thus decapitating the ability to communicate off world. Once that was done they could leisurely turn the planet into what his God would want. His only regret was the that the wretched Khorne followers were getting too powerful to keep totally in line and he knew they would demand their payment.
Suddenly the reports were appearing to him that unknown spacecraft had been detected almost at the planet. They had swooped out of nothing and disabled or destroyed the few defence crafts that the PDF had had to try to stop them with. Almost all the communications had to the crafts had been ignored with one exception. It was a message from the unknown spacecraft before the fighting started. Helm took the message from the hands of his helper that had brought it.
There is a cancer growing on this planet which has spread it's filthy strands all around the world. That must be purged for everyone sake and we have decided to cut off it's head. Do not impede our progress. For those who stand in our path will surely be lost.
In panic the Governor had ordered the PDF to intercept the foul xenos (for surely no Imperial would build such a craft!) only to see his forces decimated. There were other reports attached that informed that the spacecraft had come into lower orbit and started landing forces at few locations including sector 312 grid 58'177'21.
Halm stared at the message for a small time saying nothing. Then his head snapped up and his glare nailed the other man in front of him to his place.
- Send out the signal we strike now! Tell the circle, even the Khornate loonies, to round up their men and machines and expect an attack. I don't know who these are but they shall soon know what happens when I'm attacked.