From publisher blurb:
The idea that we enter combat in a vacuum is preposterous; life is always happening around us. Contained in this small supplement is a list of tables that contain random, rollable events for Urban, Dungeon and Wilderness settings. The DM will choose how to use these, but they are designed primarily to add a bit of interest to your combat encounters beyond "stand adjacent and bash" styles of combat that can be easy to fall into.
Some of these events have the potential to lead to sidequests, introducing NPCs… any number of things.
The events presented in the tables are meant as suggestions…. as DM you might feel that the direction given in the text is unfair or not suited to the context, so adapt as you see fit. Think of these as possible directions, ways to spark ideas, introduce sidequests or NPCs... whatever you like. And of course if you don’t like what you get, roll again!