you chose to investigate

You go down the alley and spot nothing unusual at first. Suddenly you’re attacked by several people. You fight back the best you can but you get knocked unconscious.
When you wake up you see a trail, possibly by the attackers. You follow it and it leads to an abandoned warehouse. Suddenly you hear voices, so you follow them. You can’t quite make out what’s being said, but you hear the stranger. You have to save her.