Adventure Title
Skull/Bone of (the) Night/Midnight/Shadow/Darkness

Alternate title
Monster pick: Ghoul, Dweller, Serpent Folk, Abomination of the Citadel/Castle/Fortress

Opening Scene
A lake or ocean that is Brackish where they encounter Nobility that is/are Looking for a fight

Plot hook and draw
Unwittingly caught between two opposing forces ignore the second d20 roll that is/has Offered a contract of employment

Plot Concept
Tear a gateway to an ancient era that is motivated by An ancient feud

Primary Antagonist
A tribal chieftain who/that is Maniacal

Plot fulfillment and location
A relic of Acheron or Valusia from An otherworldly gateway