It's for 1st to 3rd level characters, which may be an issue for some, as it seems there is a large portion of Old School adventures that already fall into that range. From my personal point of view, you can never have enough low end adventures.
From the blurb:
For the people of the border town of Aldin, danger was part of life. Savage beasts, extreme winters--these were things the people were prepared to deal with. What they weren't expecting to face was something so unholy that it was forbidden to speak of.
Now a young group of would-be adventurers on their way to potential riches are forced to take refuge in Aldin due to a severe storm. Will they manage to escape...