>>715529756The cataclysm uncovered china which was hidden away by the titular mists.
Anduin fucks off to china without telling daddy which makes him asshurt and he sends out a squad to get him back.
Garrosh hears of the alliance making a move to pandaria and gets EXTREMELY asshurt about it and sends a horde squad.
https://youtu.be/zUomeoGHvKM
The pandas want no trouble because they live on a cursed land that was raped by an old god corpse and whenever people lose control over their negative emotions some creatures appear from the ground and rape them.
So the alliance and horde arrive on that cursed land and hilarity ensues. In the very first zone they enslave local races and pit them against each other in a proxy war.