From the back of the booklet:
The Birdcruncher goblin tribe has risen to remarkable heights under the leadership of its four goblin hero-chiefs - Reta Bigbad the fighter, Chuffy Lickwound the rogue, Poog the cleric of Zarongel, and Mogmurch the alchemist. But these legendary goblins have outgrown their tiny fiefdom, and they want to explore beyond the same, boring corer of Varisia they've known all their lives. Luckily for them, their minions have brought them something new and interesting to help cure their relentless boredom. A mysterious magic bag offers more adventure than even the goblin chieftains originally realized!
Introductory scenario for Free RPG Day 2018 (a working title).