A few years ago, a death cult was found operating in Slakiv lands. The self-styled “Sons of Du Van Ku” simply set up a secret lair and start scouring the countryside for likely-looking victims to kidnap and murder or drug and brainwash. It took nearly a decade of investigation and cost hundreds of lives (counting innocents, soldiers, mercenary adventurers and cultists) before the group was eradicated (Mostly. Probably.) from Imperial lands, but now the source has been traced to what seems to be the original hidden temple on a mountaintop in the neighboring land of Clevaria.
Unfortunately, Clevaria is extremely hostile to the Empire. They accept no ambassadors, and anyone speaking Haemish there is chased out of town or lynched, sight unseen. The sorcerer-kings of Clevaria regularly try to stamp out the cult, but it always springs up anew. Despite this shared problem, the stubborn bastards have no interest whatsoever in cooperating with the Slakiv Throne, even when it would be of mutual benefit.
That’s where you come in. Due to your linguistic and cultural training you can pass through Clevarian territory unscathed, and you can handle yourselves in a pinch. Your mission – because of course you will choose to accept it! – is to infiltrate the temple’s suspected location and bring back all the information you can about the cult, so that next time it reanimates, it will be easier to find and stop it.
According to reports, it was not too long ago that the sorcerer-kings cracked down on the cult and wiped out all traces of it that they could find, so expectations are high that, with basic caution in case of traps or possible brigands or monsters squatting on the site, you should be able to walk in, gather a respectable amount of information, and walk out without a hitch. Any treasure you gather is bonus pay unless it needs to be turned over to the Order or your commanding officer to aid the investigation.
The PCs in this adventure are a tightly-knit band of elite troops. You were raised together, trained together, fought bandits and monsters together. Character creation should be a group process, with lots of feedback and no secrets. The first session will start with finishing up characters (if necessary, as necessary) and play will begin with the party approaching the foot of the forbidden mountain at whose top the temple is said to lie.