There are hundreds if not thousands of liquors throughout all the lands, but few ever manage to stand out from the rest. The defining trait between a run of the mill booze and a rare and special spirit can often be a gimmick. This is what master brewer Donovan learned all too well.
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).