From jdyer on Fanbox: Mass effect: Femshep agrees to help Aira advertise some new exotic 'alien' (in place of paying her a massive amount fo credits shepard lost in a poker game to aria) found in human media by posing as one, not knowing or realising this is all a trap by Aria to turn shepard into a rubbery twi'lek dancer bimbo with huge jiggly tits, a perky plump ass and matching thighs and thick dick sucking lips.
Once changed and 're-educated' (brainwashed into thinking this was what she always was) femshep ends up as Arias best earning whore and favourite pet.