Reality began to bleed into itself, as two realms became one.
If one had to put it into simple terms, it would be similar to someone having internal bleeding.
The reams were no longer two separate places but one separated by a thin barrier that was slowly being torn apart causing the bleeding to gain speed.
For the being within the material plane, the bleeding between realities was slow and as such, they had more than enough time to prepare, however for those that existed beyond the mortal realms the effects were nearly instantaneous.
On Terra, the God-Emperor sent out a call to al Gos-Godesses and beings.
His message was simple, lower your heads and bow to Humanity and you will have a place within The Imperium of Man, perhaps one day you might stand as equals to the Humans themselves.
Reject my offer and face everything alone and if your lucky you will become Humanities slaves, if you're lucky enough for us to find you before your destroyed or corrupted.
His words were heard through the various heavens and hells, between magical realms and scientific planes.
His final message was the image of their realms blending with the earth or whatever plant they were normally attached to.
As the bleeding spread, however, the guardians and the prisoners that had long been dormant within the sours wall rose from their slumber and freed themselves from their prison\resting place.
The other dimensions that the source wall had been created to keep away, had reacted to the two realities blending into one and in a desperate act of self-preservation the cut of their realities from the two bleeding ones.
All of a sudden worlds that were once empty or those inhabited by whatever civilization were living on them from the most primitive to the most advanced ones found themselves suddenly living in completely different planets as other realities blended with their worlds.
Creatures that were at one time, myths- legends- beings of worship as well as fear now walked the world with them.
The God Emperors' last act of mercy was to order his guard the Custodians to ensure the survival of the planets and beings that had accepted his offer.
He had gained the many memories of the various realities and timelines Darkside had seen and interacted with and as such he simply wanted to maintain the few allies Humanity had within the realm.
The various Hells were the first to feel the effects as the warp bled and tore its way into them.
Demons and devils fought to maintain and keep control over their nightmarish exisance, while they desperately tried to maintain the souls they had, away from invading creatures of the warp.
Those that could survive and maintain their presence within the material plane fled to the many worlds the mortals called home hoping that the God Emperors offer could be extended to them.
The various magical realms found themselves forced to blend with the many worlds within the mortal realm as their planes of existence was suddenly assaulted by the Chaos Gods servants.
Attracted by the magical realms, long maintained stagnation, Nurgle the God of Pestilence invaded, his various deceases, quickly brought low the once-proud magical inhabitants of those realms.
Creatures that once boasted of their long lives to mortals that once looked at them with envy and desire, now found themselves desiring those mortals short exitance.
Slaanesh the God of Decadence, whispered and drove the magical beings into depravity as they looked for any sense relief from their quickly worsening situation.
Khrone the God of War\Blood God, took control of the many magical beasts and the desperate inhabitants of those realms and drove them into greater acts of savagery.
In a desperate act of desperation, the many sorcerors-wizards and beings that could freely use magic, used what power they had left, to blend what remained untainted of their realms to the worlds where the mortals lived.
The other realms were fairing no better.
Tzeentch the god of change, infected every realm simultaneously and drove betrail and sabotage witch cause various civil wars to spread, thereby attracting the other Gods of Chaos, and their minions to their realms.
The various heavens now united fought off the many demonic invaders, but knew that it was only a matter of time before they fell, the beings they watched over, were to divide and as such, they didn't pose the power to completely defeat the invaders.
Ina desperate act they called to the God-Emperor for help and his answer enraged all of them, but none the less they agreed.
Will you submit to me?
The moment they agreed, the sheer number of souls that charged at the invading demos, made the gods- angels and souls within the heaven shudder.
Their various lights blended with the golden light of the God-Emperor, finally forcing the invaders back, however, they paid a heavy price, none of them could\would ever be worshiped again.
As the dimensional walls fell apart and real space became hole, solar systems found themselves with new planets worlds, their inhabitants found the Fleets of Mankin waiting for them.
The God Emperors orders wore carried out and as the planets, inhabitants surrounded they were welcomed to the Imperium of Mankind.
Regardless of the Humans feelings towards the various alien-magical or even technological beings, none would dare to disobey the Emperor's orders.
Those that either refused out of pride or simply never even considered the God Emperors warnings, either found themselves calling this time a the beginning of their golden age or their horror.
Some found themselves as the only world that had sentient life in a solar system filled with minerals and planets fit for colonization.
Others were invaded by war-hungry Orks, treacherous Dark Eldar, defending themselves from insane aliens or fending off the Tau who spread their propaganda into the newly arrived worlds.
Necrons and Tyranids left nothing of what they found, neither cared for the cries of surrender that their victims screamed.
Gods and Demi-Gods of real space now joined the great war, some protected entire solar systems, while others desperately tried to contain the madness that they were suddenly forced into.
On earth, the many heroes-gods-magical-technological beings and the native Humans found themselves forced to bend the knee to the God-Emperor.
The Earth's defenders, made of what was once its heroes- villains and beings of legend as well as those that were once worshiped, were either given entire armies and ordered\forced into space and told to go and defend the Imperioums boarders.
Those that excelled in technology were taken to mars, some gained positions of power while others were killed for their insanity.
Yet in all of this, the sole reason why the various beings were allowed to exist was a simple one.
A trade was made, one that completely changed the course of history, it was part of the reason the God-Emperor had given the warning earlier.
Mother Boxes were traded for freedom.
The various officials demanded proof of the Mother Boxes' souls and when it was given, they all agreed.
The change would be slow but in time the Imperium would find itself in a new golden age, as a single mother box, repaired damaged machinery fixed coding and undid years upon years of taint, as well as incompetents.
If the God-Emperor could still smile, he would have, the change would be slow, but Humanity would find itself in a golden age once more.
Thee Webway gate he maintained sealed was slowly being repaired and as it was closing he was slowly regaining life once more.
It would take time but he would one day walk amongst Humanity once more, he now had a council made of beings even more ancient than himself, none of them would rule over him, but they would have his ear.
It is the forty-second melanism and great change is about.
Bolstered by its new allies, the armies of the Imperium of man finds itself once more in the attack, strengthening its borders and reclaiming lost worlds.
It is whispered amongst the people that the Emperor is once again active within the Imperium and with him various beings of lesser power.
Yet in this change Humanity finds itself pressed harder than ever before, demons-mutants and aliens alike seek to take the stars from Humanity.
It is the forty-second millennium and great change is about.