From the introduction:
In the world of Sword & Backpack you are a young explorer just beginning a career of high adventure in a fantastic and dangerous land. You live in a vast kingdom of boundless natural and supernatural wonder, of glorious cities and quaint country hamlets, of gloomy dungeons and haunted ruins.
The game was designed to introduce new, inexperienced gamers to roleplay as rapidly as possible. The rules, therefore, are deliberately streamlined and simple.