The four of you seem to be the only recruits at this time. The old stone building resembles something like a church, perhaps a fortress, made into a lodge of sorts. The ancient building was one of the first adventurer's guilds ever built and has a long and colorful history. Fires had been common. The building has burned down and been rebuilt over half a dozen times, each time a different architect and more than half of them insane. The final lodge was as intricate and unusual as it was beautiful and well designed, once you get past the multilevel strangeness of the old building.
Only a few people remember the old days of adventurer's and monster fighting, so many had been content to hid behind the walls when they rose to defend people from the monsters beyond. Though there were a few geezers who remembered the old days. Among them, the oldest and the geezierest of them wall was Gereyhmia. The old fart was more ancient than dirt, and could show you the universe's baby pictures at embarrassing and inopportune times. He'll spin ya a yarn long enough to knit a sweater for a dragon. A feat he swears he did once.
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Ye young gits, I have alf a mind.... to send you on ye way. Bein a master ain't what it used to be. Back in the glory days men and monsters raised hell and kept the lands safe from the nasties beyond the borders. Now the building is full of dust and cobwebs. Half the doors are locked and no one knows what anything does anymore. And whats worse, we don't have any monsters for you to fight with. Its sorry state of affairs, but there's no need to worry, I know for a fact we kept a few locked away. No one else knows about these little buggers, and I'll make sure you rot if you tell anyone we kept them all this time. So this'll be our little secret. The old cook grabs a nearby barrel lid, spiders and dust shoot out. He reaches in to the barrel and pulls out a fistfull of dirt. Then pulling a pouch from, we'll, you try and unsee that... he places a few seeds in the dirt, spits loudly onto the mound, and in only a few seconds a few creatures sprout up.
They ain't mush, but they're tasty as hell and full of the vitamins you need to grow up big like me. Now pick your favorite, introduce yourselves to your teammates, and get ready to fight. Ya boys got a basement to clean out!