A Ready Adventure Series one-shot from Anvil N Ink Publishing · 5e-compatible · 2-3 players · levels 2-3
The Siege of Ironhold Pass is a 5e-compatible dragon siege one-shot for 2-3 players at levels 2-3, designed to run in a single long session of roughly four to five hours. It builds across four acts toward a confrontation with a young dragon that treats the party not as enemies to be feared but as goods to be appraised. The draw is the shape of that build: a trapped road, a fortress climb, and a villain whose menace is bureaucratic rather than loud.
Most dragon one-shots are a single scene with a long fuse: travel, then a hit-point exchange over a hoard. This one spends its first three acts turning the dragon into a presence before the party ever sees it, so that the final encounter lands as a payoff rather than a surprise. Below is how the story moves, what comes in the book, and who it suits.
How the story unfolds
The adventure is structured as four acts that escalate cleanly from rumor to mountain to fortress to lair, with combat in each.
Act One opens in the town of Thornhaven, where the trade road through the pass has gone silent and a merchant is desperate enough to spend the last of the town’s coin to find out why. This act is the briefing and the buy-in: the party gathers conflicting accounts from survivors and skeptics, and the threat is established as economic before it is ever physical. Something on the mountain is taxing the road.
Act Two is the climb, and it is the heart of the adventure’s pacing. The road up to the fortress is a gauntlet of engineered hazards — a rolling boulder, a sabotaged bridge, a primed avalanche — each built as a problem to solve rather than a save-or-die trap. The traps are the work of the Stone-Whisperers, a tribe of kobold engineers who serve the dragon out of cold arithmetic, and the party can fight through them or try to turn them. The act ends at the fortress gates on the one true decision point of the night: storm the entrance in the open, or slip in through a hidden tunnel and approach from within.
Act Three moves inside, into a forge-hall and the workings of the fortress itself. Here the kobold chieftain and a lost kobold child put a face on the engineers, and the recruit-or-fight thread from the climb pays off — how the party treated the Stone-Whisperers shapes what they meet here, and who stands with them at the top. The fortress has its own history layered into the walls: it was raised three centuries ago by an order of dragonslayers, and a dragon nesting in a dragon-killer’s hall gives the back half of the story a quiet irony.
Act Four is the lair and the dragon. The encounter opens not with a roar but with an appraisal: the dragon weighs the party aloud, reciting their resilience and worth like a ledger, filing them under “disposition: pending.” The fight that follows is phased and built so a worn-down party still has a path — the hall’s support pillars can be brought down on the dragon as an alternative to trading blows, rewarding tables that think laterally instead of swinging harder.
The aftermath is deliberately bittersweet. The win is real, but the adventure is built as a heist against something vast and indifferent rather than a slay-and-loot, so the victory comes without a tidy hoard or easy proof to carry home. It is the kind of ending that story-driven tables tend to remember and loot-driven tables may not expect.
What’s included in the book?
It’s a complete four-act adventure of roughly 60 pages, written to run with zero preparation. Everything needed at the table is on the page, from read-aloud boxes to full stat blocks.
- A four-act adventure spanning a trapped road, a fortress climb, a kobold forge-hall, and a dragon’s lair
- Five battle-map references for the key encounter spaces
- Full stat blocks for every creature, plus a roster of named NPCs for the town and the fortress
- Four ready-to-play 2nd-level characters — no character creation required
- Scaling guidance for 2, 3, or 4 players, with extra safety rails for small tables
- Dialogue banks, skill-check discoveries, multiple opening hooks, “what if” contingencies, and sequel seeds
Who is this dragon siege one-shot for?
This dragon siege one-shot is built for 2-3 players at levels 2-3 and for Game Masters of any experience level, including first-timers, since there’s no prep and the characters come ready to hand out. It fits a one-shot night, a convention slot, or a session between campaigns.
It rewards tables that like a mix of problem-solving and combat, and especially those who enjoy a villain with a personality over a stack of hit points. Tables that mainly want a straightforward brawl with a big loot payout should know going in that the design pulls the other way.
How long does it take to run?
It’s designed for a single long session of about four to five hours, longer than the two-to-three-hour Ready Adventure standard, because of the four-act structure and three full trap set-pieces. For groups who prefer shorter sittings, the fortress gates at the end of Act Two are the natural split point into two sessions.
Strengths and weaknesses
Strengths: The villain is the headline — a cold, transactional dragon that reads the party like inventory lands harder than any roar. The traps are interactive set-pieces rather than instant-death gotchas. The single real choice at the gates gives an otherwise linear structure a genuine fork, and the kobold engineers can be fought or recruited, which changes both the climb and the finale.
Weaknesses: It runs longer than a typical one-shot, so it isn’t a tidy two-hour pickup. The structure is mostly linear apart from that one branch. And the bittersweet ending — a real win with no hoard to cart home — is divisive by design: a strength for story-first tables, a drawback for loot-first ones. Two-player groups also lean on taking the right pair of pre-generated characters (the durable fighter and the healer) to stay safe.
How does it compare to other Anvil N Ink one-shots?
| Adventure | Players | Levels | Run Time | Best For |
|---|---|---|---|---|
| The Siege of Ironhold Pass | 2-3 | 2-3 | 4-5 hrs | A boss-night dragon finale with a brain |
| Imp Bowl | 2-3 | 2-3 | 2-3 hrs | Fast, funny, deathtrap chaos |
| Hold the Fifth | 2-3 | 2-3 | 2-3 hrs | An outnumbered, tense last stand |
For a short, breezy night, Imp Bowl is the lighter pick. For a single big, atmospheric session that builds to a memorable boss, Ironhold is the one.
A taste — the dragon’s appraisal
“Meat,” it says, and the voice is not loud but it fills the hall. The head lowers, almost conversational. It looks at the fighter who charged the boulder on the road. “You faced my mountain and lived. Useful.” It looks at the rogue who found the tunnel. “You found the old lord’s back door. Clever.” Then, flat and clinical, as if reading from a ledger: “Meat: medium, bipedal. Resilience, fourteen. Vigor, thirty-one. Disposition: pending.”
That exchange captures the tone: a beat of being weighed and filed before the fight ever starts. The adventure is built with the System Reference Document 5.1, so it drops into any fifth-edition game.
Where can you buy it?
The Siege of Ironhold Pass is available now in three formats: get the paperback on Amazon ($12.99), the Kindle ebook ($4.99), or the PDF on Payhip ($4.99).
Frequently asked questions
Can it be run with two players? Yes. It scales for 2, 3, or 4. For a duo, the durable fighter and the healer plus the small-table notes keep things survivable; the dragon’s hit points and the kobold fight adjust to party size.
How long does a session take? About four to five hours, or two shorter sittings split at the fortress gates.
Are miniatures or a virtual tabletop required? No. It runs in the theater of the mind or with the maps sketched at the table; the five map references are there if wanted.
Is it beginner-friendly for the GM? Yes. Zero prep, pre-made characters, read-aloud boxes, and full stat blocks let a first-time GM run it cold.
What level should the party be? Levels 2-3. The book awards enough to carry a level-2 party to level 3, or it can be run as a no-advancement one-shot.
Key takeaways
- A zero-prep, 5e-compatible dragon siege one-shot for 2-3 players at levels 2-3
- Four acts that build the dragon as a presence before the final encounter
- Designed for a single 4-5 hour session; splits cleanly at the fortress gates
- Interactive traps, a fight-or-recruit kobold thread, and one real branching choice
- A transactional dragon that treats the party as tribute, not prey
- A bittersweet finale: a strength for story tables, a caveat for loot-first tables
- Available now in paperback, Kindle, and PDF
The Siege of Ironhold Pass is part of the Ready Adventure Series from Anvil N Ink Publishing — zero-prep one-shots designed for small tables. Browse the full catalog at anvilnink.com.
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