The Throne of Thunder has appeared off the coast of Pandaria, and inside the temple's walls is the greatest Mogu to ever live, Lei Shen. He was the most powerful Mogu, the enslave of the Pandaren race, and he has returned to reclaim his rightful place as the Emperor of Pandaria, and eventually all of Azeroth. Someone must stop him!

As someone enters the throne room, he sneered at them.

"Ah, well if it isn't an insignificant worm. Come to try and stop me?"