Hmmm. I think a fun idea of one of the group's adventures could be stopping a drow raid and eliminating the one who started the attack, like a general or something, in a fight that spanned a portion of the Underdark before the leader and the raiding party was ultimately forced to retreat to a different part of the Underdark and our characters go back to the surface as some minor heroes! It would be a good way to say how my character came along to the party, being a slave from the underdark that escaped.