Trolls and Other Trouble. The Adventures of Ruferto Basaretti, #1

In the northern dell of Nöstervalley, visitors are rare, but two large and hungry trolls have come down from the mountains to feast. This startling event launches Ruferto Basaretti on an impossible journey full of peril, intrigue, and chaos stretching across much of the changing world. This world was once ruled by technologically advanced races. To their great annoyance, the era of the humans is at hand, and they see humans as barely more acceptable than goblins.
Choosing avoidance has many humans believing the elder races are fanciful stories designed to scare children into behaving. Some ancient races do walk among human society. Some do it for profit; some because they believe the plague of humanity should be brought to a bloody end. Meeting between cultures can bring about unexpected cascading change. This is such a story.