The Doctor

One way or another you found yourself in Britain which was under attack by aliens and soon you were too hit by a gun in your arm you ran screaming for help and a Doctor.Soon a voice met yours from an old gentleman who said Im a doctor but probably not the one you were expecting.I asked if he could help me he said he would suddenly runnign he waves you over around the corner to an old police box/Tardis.He invites you inside confused you enter starting your story.