Giant firebreathing spiders attack the city!
A mayor (from the Latin mÃƒÂ¢ior, meaning "greater") is a modern title used in many countries for the highest ranking officer in a municipal government. In some places The Mayor is the Chief Executive running the city. In others, they are a ceremonial official. No matter what they really are, mayors tend to reflect their cities, and their cities and city administrations tend to reflect them.
You receive a vision of a rooftop "somewhere close by", where a rare moss grows; in the vision, you know the moss is suitable for greatly enhancing the effects of certain types of potions. Now go and find that rooftop. Don't fall off. (Of course, rooftop runners *will* be taken for miscreants by the local City Watch....)