From the Front Cover:
A dwarven expedition has stopped in Mulmaster for much-needed supplies. Furgis Boltsmelter, their founder and leader,
is looking for some "no questions asked" protection for the duration of his stay in the city. Whatever he is trying to protect may not stay hidden for long. Can you keep his secret treasure out of the wrong hands? A four-hour adventure for 1st-4th level characters.
From the Introduction:
Welcome to Boltsmelter’s Book, a D&D Expeditions adventure, part of the official D&D Adventurers League organized play system and the Elemental Evil storyline season.
This adventure is designed for three to seven 1st-4th level characters, and is optimized for five 2nd-level characters. Characters outside this level range cannot participate in this adventure. A player with an ineligible character can create a new 1st-level character or use a pregenerated character.
The adventure is set in the Moonsea region of the Forgotten Realms, in and around the city of Mulmaster and the Flooded Forest to the south of the city.