Prologue: Doom
With great horror the heroes watched as the World Tree got drained of it's powers, Malfurion plans to lay Achimonde the Defiler into a trap failed and managed to drain Nordrassil of its powers. A short moment after it Nordrassil died, it leaves falling down and moments after it, it collapsed under its own weight creating a massive thunder when it hit the ground smashing the mountain side away.
Archimonde, with his newfound power destroyed the last resistance left at Hyjal. Every living being fighting against the combined might of the Burning Legion and the Scourge were eradicated. Great heroes like Malfurion Stormrage, Tyrande Whisperwind, Jaina Proudmoore, Thrall and other heroes were killed. The also new-found horde was destroyed before it even began.
The Night Elf civilization was wiped out two weeks later when Darkshore and the rest of Ashenvale forest fell. A handful of Night Elves avoided the Burning Legion and managed to escape with other survivors of kalimdor to the Southern Eastern Kingdoms. A handful survivors of Night Elves, Orcs, Humans from the destroyed Lordaeron, Tauren, Trolls and High Elves arrived weeks later at the Stormwind Harbor telling the bad news to the untouched part of the Eastern Kingdoms. The races managed to get along better than they would normally, now they all shared something in common.
During this time the Scourge advanced throughout Lordaeron to wipe any human resistance out and they were succesfull. The Argent Dawn, Scarlet Crusade and other organisations fell before the might of the Scourge. After the Scourge was done in Lordaeron they advanced north in Quel'thalas again to wipe out any remaining High Elves who survived or came from Dalaran. Kael'thas and his mages managed to open a portal in the nick of time teleporting them also to Stormwind. During the second invasion of Quel'thalas they also managed to wipe out the Gilneans and many Dalaran mages. The Scourge was unchallenged and claimed the northern part of the Eastern Kingdoms. The new alliance managed to fortify Thandol Span putting an halt to the advancing Scourge.
Kalimdor was easily consumed with little resistance left and the Lich King had gained time to transform Northernd and Lordaeron into a true paradise of darkness... And Kalimdor was a preparation ground for the Legion to launch an invasion of the last survivors of Azeroth.
Only a few positive things came out of this, it brought all races closer together. Now having all good forces of Azeroth in once place, it gave them a chance to eradicate lesser evils of their lands. Things like Gnomeregan is reclaimed. The Dark Iron joined forces with the newly created order on Azeroth: the Azerothian Resistance, The Firelord is no friend of the Legion or the Scourge. Even the trolls in the south and other unthinkable races joined the Azerothian Resistance in hope having a chance to survive.
The Dragonflights were no match also for the combined power of the Burning Legion and the Scourge. The first flight to fall was the Bronze Dragonflight, the Legion managed to corrupt the timelines making the Bronzes unable to see what was going to happen in the future. With refusing to retreat from the Caverns of Time, Nozdormu and his Flight fell before Archimonde and his power.
Second flight to fall was the Blue Dragonflight. The Scourge overran the Nexus. As last act, Malygos overcharged the Nexus creating a massive explosion ripping Northern apart into pieces. It exists of several islands now. The north side of Mount Hyjal fell into the sea by the massive explosion and sunk Kalidar isle beneath the sea, the future home of Teldrassil.
The Green Dragonflight were hit hard when Nordrassil got destroyed, it somehow cut down the connection between Azeroth and the Emerald Dream. Denying them acces to Azeroth.
The Red Dragonflight managed to escape and joined the Azerothian Resistance, not entirely without losses.
The effect of all of this on the Black Dragonflight is unknown, Deathwing hasn't shown himself to give himself a fighting chance...
OOC:
The Burning Legion has won the third war, a big resistance managed to survive hoping they can restore all this and perhaps live.
This is where the story starts, the story will be seen mostly out of Ilsinea's eyes. But everyone can PM if they want into the story and what role they want.
I doubt any scourge manage to break away from the Scourge itself, the Lich King hasn't weakened. Also Arthas and the Lich King are in this timeline seperate beings. Sylvanas and her whole gang are Scourge.
Sadly this story restricts some races like Blood Elves and Forsaken. Since Illidan never got the chance now to attack the Lich King and the Elves never got to meet Vashj to lead them to the demons. This makes them High Elves.
Archimonde left the world and now Azgalor along with a few dreadlords rule the Burning Legion and Scourge.
So every event that happened after the third war did
NOT happen, making a lot of friendships non-existant. Feel free to ask me questions about it.
And I always wondered how Azeroth would look after the Third War was lost.
And a map showing what happened and controlled regions:
https://2img.net/r/ihimizer/f/doomne.jpg/Black = Scourge controlled
Red =Burning Legion controlled
Dark Red = Scourge and Burning Legion controlled.
Purple = The Azerothian Resistance
Gray = This shows what the Nexus did to the world, the gray lines mean gaps between the lands.
And yes I'm aware the Burning Legion controls the Scourge, just showing the forces.