In The Frozen Throne, players revisit the wartorn world of Azeroth. Several months have passed since Archimonde and the Burning Legion were defeated at the battle of Mount Hyjal, but a new threat has arisen throughout the land. The campaign follows the traitorous Death Knight Arthas and the renegade Night Elf Demon Hunter Illidan as they battle their way toward the mysterious Icecrown glacier in Northrend. Imprisoned within this icy tomb is the soul of Nerzhul, the evil Lich King responsible for unleashing the Undead Scourge upon the world of Azeroth. As the saga unfolds, the villains intentions are revealed, and the fate of the world will once again find itself in the hands of the resilient Human Alliance and the stalwart Night Elf Sentinels.