You were a BSAA agent and you were infiltrating a terrorist group base. The BSAA weren't interested on taking down some terrorist group but they were interested in this certain group due to them having a biological weapon and it was rumor to be a custom made T-virus.
As you were sneaking between the shadows and what not you manage to kill and knife a few guards that guarding the lab. You open the door but it was lock but don't worry you weren't unprepared as you pulled out a auto-lock picker and then you walk inside and you see the scientists there was already killed? Slash and stab sound huh? But then a gun pointed at you from the side.
"Mhm... A BSAA agent? Hmm... Just don't do anything stupid."
She said before walking behind you to take your gun away and stuff. Before walking in front of you and still holding a gun at you.
"Tell me... Did the BSAA sent you here to retrieve the T-virus? Mhm. Pretty readable..."