How to Prepare for Session One Without Overpreparing

By Lynn | The DM Corner — Killer Bee Press

Session Zero is finished. The characters are built. Everyone knows the kind of campaign they're playing, and the first real session is on the calendar.

Now comes one of the easiest traps for a Dungeon Master to fall into:

Trying to prepare for everything.

You can't.

Players have an extraordinary ability to walk past the door you carefully described, ignore the mysterious stranger in the corner, adopt the goblin you expected them to fight, and become intensely interested in an NPC you invented thirty seconds ago.

That's not a problem. That's tabletop roleplaying.

The trick to preparing for Session One isn't predicting what your players will do. It's preparing enough that you're comfortable when they do something you didn't expect.

Know How the Session Starts

You don't need to know exactly how the session will end, but you should know how it begins.

Give the characters an immediate situation that requires interaction or a decision.

Maybe a merchant hired them to recover a stolen shipment. Perhaps they've arrived in a village where everyone locks their doors before sunset. They could begin aboard a ship approaching an island that isn't supposed to exist.

Whatever you choose, start with something happening.

"You're sitting in a tavern. What do you do?" can work, but it places all the responsibility for creating momentum on the players.

Instead, give them something to react to.

A scream comes from upstairs.

Someone slides a bloodstained letter across the table.

The tavern door opens, and everyone inside suddenly goes silent.

Now we're playing.

Prepare Problems, Not Solutions

One of the most useful habits a DM can develop is creating problems without deciding how the players are supposed to solve them.

Suppose the characters need to enter a fortified manor.

You might imagine them bribing a guard. Your players might climb the wall, disguise themselves as servants, sneak through the sewer, impersonate visiting nobles, start a fire as a distraction, or decide that launching the barbarian over the wall with a catapult is somehow the most reasonable option.

Prepare the manor.

Prepare the guards.

Prepare what happens if someone raises the alarm.

Then let the players figure out the rest.

When you prepare a specific solution, unexpected player choices can feel like they're breaking the adventure. When you prepare the situation instead, those choices become the adventure.

Know Your Important NPCs

You don't need biographies for everyone in town.

For important NPCs, three things will usually get you through the session:

What do they want?

What are they afraid of?

How do they initially feel about the characters?

Those answers give you enough information to roleplay naturally without memorizing paragraphs of backstory.

For everyone else, keep a short list of names nearby.

Trust me on this one.

The moment you don't have a list, your players will ask the stable master's name.

Prepare What You Don't Improvise Well

Every DM has strengths and weaknesses behind the screen.

Maybe you can invent NPCs all night but struggle to create balanced encounters on the fly. Maybe combat comes naturally, but naming a tavern causes your brain to completely shut down.

Prepare accordingly.

Keep encounter statistics ready if you need them. Write down several NPC names. Have a handful of rumors, locations, treasure ideas, or descriptions available.

Your prep should support you, not some imaginary version of the perfect Dungeon Master.

Give Yourself Pieces You Can Move

Not everything needs a fixed location.

If you've prepared an interesting encounter with a wounded knight on the northern road but the party travels south instead, ask yourself whether anything actually requires that knight to be in the north.

Probably not.

Move the encounter.

The players don't know where your notes said it was supposed to happen.

This isn't cheating. It's using your preparation efficiently while allowing the players to choose where they go.

The important distinction is that their decisions should still matter. Don't secretly force every road to lead to exactly the same outcome. Move useful pieces when appropriate, but allow choices to have consequences.

Stop Preparing When You're Ready to Play

There will always be another NPC you could develop, another map you could draw, another encounter you could balance, or another page of lore you could write.

Eventually, preparation stops making the session better and starts making you more reluctant to let the players change anything.

For Session One, know the opening situation. Know the immediate problem. Understand your important NPCs. Have the encounters you're likely to need ready.

Then stop.

From Behind the Screen

Your players aren't coming to the table to experience your notes.

They're coming to make decisions, roll dice, create ridiculous plans, survive terrible ones, and discover a story with you.

Prepare enough to understand the world and respond confidently when they interact with it.

Then leave some room for them to surprise you.

Because sooner or later, somebody is going to suggest launching the barbarian over the wall.

And you're going to need to figure out the DC.

That's the game.

— Lynn, The DM Corner | Killer Bee Press