Patch 5.1.0: Landfall is the first major content patch of Mists of Pandaria, and the beginning of The Pandaria Campaign.
The conflict between the Horde and the Alliance entered a bloody new chapter in Pandaria. As the two factions' armies clashed on the shores of the continent, Warchief Garrosh Hellscream dispatched elite troops to find the Divine Bell—an ancient mogu artifact capable of endowing his soldiers with unimaginable power. Garrosh's bold and reckless actions, however, had dire consequences for the Horde, including the outbreak of violence against the Darkspear trolls and the expulsion of the blood elves from the once-neutral mage city of Dalaran. Although Garrosh claimed the bell, Prince Anduin Wrynn and the Alliance secret agents of SI:7 closely tracked the warchief's every move. On the highest peaks of Kun-Lai Summit, the brave prince thwarted Garrosh's plans, leading to the fabled mogu artifact's destruction.