general, fantasy/hybrid human rp interest?

Like, our characters head off on a quest because there's this like evil wizard far far away who's already covered the world in like a frozen wasteland (maybe zombies?). All sorts of stuff could happen when the world's frozen
Characters in this case would be like early to mid 20's, with a job(but like adult novel angst type jobs so pretty unusual ones), very different backgrounds(how they were raised)