Synda and Johnny

Talk to Synda or Johnny about Awareness.
They will ask you to fetch them Sting the Sword.
When you bring them Sting, they'll ask you to to go to the Abaesen-pulu Egg Mine and save a yong girl from some bad Ordinators.
After you've completed the Abaesen-Pulu quest, asy Ordinators to Synda or Johnny and they ask you if you'd like to go with them to The Underground, the local vampire/demon bar.
Say Yes and they'll lead you to the The Underground entrance which was previously locked.