The orcs lived in peace with the Draines in Draenor and then the Demons came and corrupted the orc, a Pit lord corrupted the orcs by making them drinks his blood and used them to take control of the Black Temple. The Burning legion saw great use of the orcs and wanted to use them as thier war machines, Kil'jeaden then aquired a apprentice, He Was called Ghol'dan former apprentice of the orc leader Ner'zul. Ner'zul who refused to lead the orcs to war agains the humans after corrpting his brothers with the blood and killing almost every Draene in enite draenor(Outland) Reason Ghol'dan left Ner'zul was that Kil'jeadan offerd great power and in return Ghol'dan would lead the orcs to azeroth and fight for the Burning Legion. Ghul'dan summon the leaders of every orc clan in draenor.
two of the verry famus, Ogrim Doomhammer and Grom Hellscream. they all accepted and then followed the Demons back to azeroth.
Mean while, the Trolls of Zul'aman was beeing heavly attacked by the Lordearon Alliance, deafeting a great number of the trolls.
The Orcs lead by Ogrim Doomhammer later attacked from the north. they had conqured the blackrock mountains and much more beffor meating any great resistance from the Humans. The orcs attacked using great dragons hatched by one the dragon aspect Alextrasza, the orcs threatned here to kill all her eggs if she didnt obey. they attacked fast and hard and forced the humans back but while ogrim where pushing forward Ghul'dan betrayed him and toke Half the orc fleet to search for the Ledgendary ''eye of sargares''. Orgim didn't realize what had happend until it was to late. The Humans then pushed orcs back killing great numbers back in to Blackrock mountains while some where pushed back to Dreanor. The land had been corrupted by all the dark magic the orcs had been practisiong on it and then just started to fall appart, till this day there is still parts of Deanor missing, the elementals where in war with eachother and with the orcs. The Humans then invaded the orc homeworld to kill every orc and free the world from their Horrors. Orcs not giving up attacked the human camps and saw to end thier invastion. But the humans resisted and pushed back the orcs and everything went the Humans way, Then the demons interfeard and helped the orcs fight the humans and Elves. The humans finally where pushed back but not deafeted. then the shattaring happend with closed every portal in Dreanor and the humans where traped. Many of the leaders died but camps remained when the reopening of one portal. The demon hunter Illidan had deafeted Magtheridon (Pit lord that corrupted the orcs) and toke Black Temple with the help of Akarma, the leader of the Dreanie survivors.
Some of the orcs, the Mag'mas (Dont reameber the name 100%) managed to break free but where under attack by Ogres and Hallow orcs. Thrall, The leader of the Horde Helped the Mag'mas. Thrall did not know that the leader of the Mag'mas where infact Garrosh Hellscream, son of Grom Hellscream. Thrall then meet up with the young leader and brought him to the capital city of the horde Oggrimmar. Thrall saw great potential of the youngling, but bit using his head and only having pried he made swift dections with lead to him challanging Thrall to a duel for leaderchip of the Horde, Thrall looked to be deafeted but in the last second the Undeads attacked and forced Thrall and garrosh to fight toghether and decided to push the duel. Thrall then decided to go to northrend and fight the undeads. Garrosh etablished the first camp for the horde and not to far behind came the Forsakens landing on the other side of northrend.... To be Continue.