- dark history of bren and mags (they did lot of shady things in their past and they still have something going on)
- weird stuff in cellar, it's quite vast:
  - treasure room (bren and mags are actually very rich), locked with arcane lock
  - locked cell with some humanoid (changling or doppelganger probably, bren and mags are using it for something)
  - second empty cell (long dead corpse of something?)
  - large storage room with weird items (guarded/haunted?)
  - laboratory (they craft potions and spices?)
- at start each character gets hidden boon and personal goal (like join cultist, find and steal something, kill someone, ...)
- few possible encounters in cellar:
  - bren and mags have some pet that guards it, something like giant spider or something
  - it's also infested with rats
  - there is rift to etherial plane (invisible but leaking), xarrul can have some creatures from there