
Originally Posted by
Kaylia
Ulduar had nothing to do with the Lich King, it's Bronzebeard who got sidetracked in Stormpeak, found Yogg Saron and eventually Algalon (the story was continued later in Hall of origination). It's a great side story, but you can't say it's related to the rest.
Cataclysm started with Deathwing freeing himself from Deepholm, flying all over the world destroying everything, summoning Ragnaros and teaming up with Al'Akir to create a disbalance between the elements (a similar story happened in Draenor/outland), brought his son, daughter and wife back to life to life (who turn out to be controlling BoT in the shadow). In the end, it's basically a bunch of character corrupted by the Old Gods who ended up teaming up under Deathwing's banner (also corrupted by old god).
Deathwing disappeared after his fight against Alexstrasza when he was forced to retreat because of a wound.