You could research some RPG cliche lists and/or TVTropes (or
both at once). There are many common themes that may be used for procedurally generating quests. Many items of such lists are just complaints, but others are themes that can be reused. With some mix-and-match you can get interesting results. In fact given how some of the most acclaimed RPGs have been criticized for being too cliched, it would end up being at the very least an interesting experiment.
...I think I'm exceding the scope of your project. Well, even if you just want to create some introductory text, you can get some inspiration from there.