Dragon was sparked off by a comment on Carrochcrag, where Vargard wondered when he would actually encounter that dragon the scenario had him prepare for. So you've equiped half a score of knights and leads them North to the hamlet of Caith, where you find out the Dragon is a hoax pulled of by a gang of bandits, who use the many caves in the area to appear out of nowhere. You will have to defend the village and train the peasants to defeat the bandits.
NOTE: Even though these games are labelled as Invasion maps, they concentrate at least as much, if not more on the Economic challenges.
Tips: - should the trees block your way to the cavern, you can find a way around them. - pitch can be found on the map itself - be careful, for some resources are *really* limited.