Mouthwashing story and plot
No spoilers — shown by default
Mouthwashing follows the crew of the Tulpar, a stranded cargo freighter. Choose how much of the story to reveal below.
The next section names deaths. Stop here if you only wanted the premise.
Light spoilers — premise and context
Premise, light spoilers
Pony Express is laying people off. The Tulpar is hauling a cargo that turns out to be mouthwash. Curly is the captain until the crash leaves him unable to speak. Jimmy takes charge and blames the crash away from himself.
The months after are shortages, a locked medical room, and hallucinations that use Polle’s shape.
Full spoilers — story, solutions, facts and questions
Mouthwashing follows five people stranded aboard the Pony Express freighter Tulpar after a collision. The telling moves between before and after the crash, gradually changing what the player understands about the crew. Full plot revelations are separated below.
What I saw
The spoiler-light premise centers on a delivery company, its horse mascot, the cargo hold and a crew in conflict before the crash. The timeline page separates chronological order from the game’s chapter sequence.
Premise, light spoilers
Pony Express is laying people off. The Tulpar is hauling a cargo that turns out to be mouthwash. Curly is the captain until the crash leaves him unable to speak. Jimmy takes charge and blames the crash away from himself.
The months after are shortages, a locked medical room, and hallucinations that use Polle’s shape.
What the full plot contains
Anya dies. Daisuke dies. Swansea dies. Jimmy puts Curly in the cryopod and then kills himself. The cargo is mouthwash, which is also what Swansea drinks. Those sentences are the Wikipedia outline. The ending page walks through the last scene.
There is one ending. Achievement names that sound like extra endings do not change the story.
Checked facts
| Item | What the sources say | Source |
|---|---|---|
| Ship | Tulpar, Pony Express | Wikipedia · Source links |
| Structure | Told out of order | Wikipedia; guides · Source links |
| Cargo | Mouthwash | Wikipedia · Source links |
| Endings | One | Multiple guides · Source links |
Questions
What is the plot of Mouthwashing?
A freighter crew survives a crash that the co-pilot caused, then lives with the lie. The full chain is on the ending page.
What is the ship called?
The Tulpar.
What is the cargo?
Mouthwash.
How many endings are there?
One. See the all-endings page for why achievement names confuse people.
Is the story in order?
No. Use the timeline page for a calendar.
Keep reading
Sources
- Wikipedia — Plot outline
- IGN — Review context
- Mouthwashing Wiki: Chapters — Checked 2026-10-28. Public article API; community source, not an official script.
Last checked . Page updated .