Those sissy boys in the army, they gotta have their 'bots and guns, shiny vehicles and iron suits. Me, I don't need none of that. I've got everything I need on me.
Cagle, Claremont Class Biomod Mercenary
The player characters, experienced and somewhat well known, hear rumors and travelers' tales about a distant area being overrun by dragons (or other terrifying monstrosities). The locals have sent them a message, begging for heroic aid.
When they investigate, they discover that nothing of the sort is going on. It turns out that a group of thieves wanted them out of the way so that they could rob them (or someone who would normally receive their protection).