Adventure Title
Jewel/Gem/Amulet of (the) Night/Midnight/Shadow/Darkness

Alternate title
Priest/Priestess of the City

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

Plot hook and draw
A priest or priestess that is/has Attempted blackmail or extortion

Plot Concept
Tear a gateway to an ancient era that is motivated by Pure malice

Primary Antagonist
A tribal chieftain who/that is Cruel

Plot fulfillment and location
The kidnap of a powerful figure from A lost island or ruin