What is the story background of the expansion?
Players last visited Northrend in Warcraft III: The Frozen Throne, in which Arthas Menethil fused with the spirit of Ner’zhul to become the Lich King, one of the most powerful entities in the Warcraft universe. He now sits atop the Frozen Throne deep within Icecrown Citadel, clutching the rune blade Frostmourne and marshaling the undead armies of the Scourge. Players will skirmish with the minions of Arthas from the moment they set foot on the continent of Northrend. Arthas will be a constant presence as players progress through the expansion content, which will culminate in a showdown with the dread Lich King himself.
