Re: Character and group planning
There's a few things that are going to be specifically required in your backstory, depending on what group you're in.
Setup 1: Where you were when the message reached you that you were needed in the town of Gloom's Edge (due to being named as a beneficiary of a will), whether by direct messenger, mail handoff, whatever. A messenger finding you in the depths of nature is fine, they have a good idea where to look.
Setup 3: What about you would draw the attention of a noble in search of some adventurous spirits. This can be anything, whether it's renown as a local mercenary, having a shingle out as a spellcaster, or even just walking through town with flashy clothes and obvious weapons. (Or an animal companion.)
Group 4: This one is optional since I can make it up myself if you prefer, but feel free to describe the way you got hijacked into the middle of nowhere. Were you bribed? Threatened or blackmailed? Drugged? Lured out under false pretenses? Beaten up and hauled unconscious? Sky's the limit. I will say, though, your abductors were careful to guard their identity, so don't include any face-to-face interaction. At most, you know they were some medium-sized humanoids, on the large side.