Basics of Writing a RPG One Shot Adventure
The Basics or the Hook
The device that draws the player characters into the adventure. This is includes the background.
The motive they have to escape their current situation
The reward they expect for achieving the goal
The adventure’s particular, uh, gimmick
The Enigma (optional)
Motivation or story behind the story. Something may or may not learn at the end of the adventure but can grow into something larger.
A surprising plot development