Diablo 4 act 1:
We are 30years after the events of Reapers of soul.
The awakening of the Nephalem, sanctuary falling in a greater and greater spiral of chaos…
The heroes of D3 became certain that humanity’s survival lays with the destruction of both hell and heaven(since Imperius is hostile to humanity)
Trang-Oul, the dragon of balance can’t bear this kind of imbalance and sends you back to where it all started. Trang-Oul takes your soul and send it back to your younger non-Nephalem self to stop Baal from corrupting the worldstone.(or it could simply be him talk to your former self as a premonition through the void and time)
This is perfectly in the realm of Trang-Oul’s power
trang-Oul, the five points each holding a symbol representing one of the five elements they believe Trang-Oul to be linked to earth, air, fire, water, and time
https://diablo.fandom.com/wiki/Trag%27Oul#cite_note-SotS-2
Disclaimer:It could simply be him through the void, speaking to your former self, instructing you how to stop Baal as a Premonition dream.
You succeed, but the void being an plane exempt of time and space allows Lilith to witness and remember the reverted events and your time jump
Trang-Oul also being a Being of the void created a window in order to communicate with you, like he did with Rathma, Lilith took note and is a fast learner, she now can do similar and communicates with Rathma to plan how to summon her back
DEkard Cain is alive again and Tyrael is still an Angel
Diablo 4 act 2:
At this moment, Sanctuary just witness the destruction, terror and hatred that the events of Diablo 2 created. Lilith takes this opportunity to ask for assistance for her plan to muzzle Hell once and for all
She claims that she is doing this to protect her children, the humans of sanctuary.
We accept the offer and venture hell with her and Rathma
She manages to becomes one with the burning hells, Rathma emprison her in a soulstone and drive it into the Burning hells core… now having the control over who gets to respawn and having control over all the minions of hells.
The lesser and prime evils flee hell to not be killed and fall under the control of Lilith
They flee to sanctuary where they reek havoc
Diablo 4 act 3-4-5:
You roam sanctuary to kill all the Dark exiled
Diablo 4 expansion:
Having seen the events of the black world stone, Lilith’s plan is to do it again, but we’ll this time. She wants to reborn Tathamet, she’s a mother afterall, birthing is her perk.But this time it’s gonna be done right with the missing parts like the burning hells and the most powerful necromancer to assist the revival
Imperius tries to stop it with his army but get rektd, in the process he miraculously fall on the prison of mirror and rescue Inarius
Back to heaven Inarius is weird. Little the angels now, he’s not one of them anymore, he’s not himself, he’s not anyone. During his torture in the prison of mirrors he elaborated an idea to bring back his tortured face and how to eradicate everything and everybody that lead him there
Back in heaven Inarius takes control of the Crystal arch and tune it on himself to absorb the light&sound of the death angels energy instead of letting them reborn. This process heals him, but can’t heal his heart. It becomes addictive and he can’t stop doing it, so much that he starts killing other angels to feed on them
Inarius becomes a Super Angel, the closest thing to Anu
Lilith’s Tathamet reincarnate wants to destroy heaven but Inarius won’t allow it
In Diablo 4 we aren’t the center of attention, we are side assistance, spectators, trying to limit the destruction created by the battle of gods we witness
Diablo 4 expansion 2:
We get to face the weakened victorious god
Tyrael helps us by informing us of a very powerful Horadrim artefact, strong enough to weaken the Entity down to our level to be able to vanquish it . This artefact was created by Zoltan Kule and Jared Cain and could only be operated through their blood to prevent it from falling in the wrong hands. Dekard Cain being the descendant of Jared offers himself to do it, knowing well that at his age and being a diluted bloodline of jared, it would ultimately kill him.
We defeat the God and in Diablo fashion… we return to status quo since the death of the gods recreated the burning Hells and Heaven
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