Warden hero class- Kill Ysera in the emerald dream (nightmare corrupts her)
Some stuff happens which results in Nozdormu dying (leader of infinate dragon flight) and Deathwing finally dying (his master plan twilight dragons dont seem so tough)
Sargeras sees all the dragons are dead, believing Azeroth defenseless he makes for one final motherfucking all out war. Demon Hunter is the obvious hero class. There is explosions and death, King Wrynn kills Thrall before jaina can confess her love, Hellscream goes evil again, saurfang destroys legions upon legions of demons. The orcs leave azeroth another planet because humans are douchebags.