D&D One Shot

An outline for a one-shot adventure with the situation, what the characters are, the aim of the one-shot, events during it and an ending.

dnd5e oneshot quest

theme:

The PCs are emotional dwarves who must befriend/tame a cursed will-o'-wisp. It might involve air.
There is a loud adventurer who works against them. they are the distant relation of a character.
The characters start in a tense stand-off. At some point they encounter an elemental. If things slow down a character learns something with a successful skill check.
At the end there is a reward of a few potions.

The PCs are fugitive rangers who must protect a ruined wood. A character is being hunted by a faction. It might involve gnomes.
There is a desperate healer who falls in love with a character.
The characters start in a dream sequence. At some point they encounter an invisible wall. If things are going nowhere a character learns something useful with a Perception check.
It finishes with a reward of a ruined mansion.

The PCs are mutant monks who must escape from an elemental bridge. It might involve snakes.
There is an eccentric cleric who betrays them partway through.
The characters start waking at a shipwreck. At some point they meet an intelligent beast. If things get stuck there is an earthquake.
At the end there is a family gathering.

The PCs are rebel urchins who must make a trade with a lucky pirate. The mood might be... desperate
There is an intimidating ruler who turns out to be the villain. they are the aunt of a character.
The characters start with an explosion. Partway through they encounter a talking door. If things are going nowhere something starts following the group.
It finishes with a reward of membership of an elite group.

The PCs are famous fiend hunters who must run a tavern for one night as a favour for the owner. It is frequented by warriors. Two of the characters have fallen in love. It might involve bullywugs.
There is a vengeful priest who wants to do the same thing. they are the former employer of a character.
The characters start on the road about to encounter someone. At some point they encounter a deadly trap. If things slow down someone hears a useful poem.
It finishes with a wedding.