Horde WPL Cauldron Quest help

Ok the guy that is supposed to have this quest does not offer it. I have been all over the web, and have done quests that are supposedly the ones to enable it, and it should be avail at lvl 50 (im 54) but he still does not offer it. Can anyone who has been able to get this quest please inform me what im doing wrong? Super frustrated as that is MASSIVE XP.

Neeeeevermind. Figured it out.

can you mention how? i have same the problem. thanks.

U have to grab the Call to arms: Plaguelands quest from some guy in Undercity =) He'll send u to bulwark and onwards with the chain.