Audience with the Kobold King

From publisher blurb: This is our 28th installment of the one-page dungeon series. The objective is to create self-contained adventures/dungeons with all things necessary to spawn fun adventures on a single page. It is system neutral so it can be easily ported to any system. It shouldn't be much trouble to include it in any medieval setting. In the Kobold King, a group of heroes is hired by the dwarven lords to deal with problematic kobolds. The small draconids had never been a problem and even co-existed peacefully with them. But in the last few months, kobolds are reckless and dangerous. Someone must put a stop to their attacks. The legends say that kobolds were once dragons who defied the gods and were punished. The dwarf lords ignore that the new kobold leader is not a foe to underestimate. A copper dragon under a kobold disguise leads the kobolds. And whoever comes to confront them is up for a big surprise. Because this dragon wishes to return kobolds to their former winged glory. This level-neutral adventure brings the heroes to a hideout in a cave, it puts them before an ambitious copper dragon, and gives them the possibility of getting its hoard!