There's a wealth of idea-spawning goodness crammed into this small product. To start with, when you download the zip file, there are no less than four PDF files inside. Between them there are plenty of resources to give you ideas for adventures, and provided in a range of layouts to suit most tastes.
The product provides background and setting information, which links this in to other Occult Moon 'Tools for the Sandbox' product should you choose to use it in conjunction with them - yet not so tightly interwoven that you cannot use it somewhere else in your campaign world if preferred. The four main players are set out with plenty of detail as to who they are and what they intend, all you need to do is stat them out for your chosen ruleset. Several main adventure seeds - or 'Possibilities' - are provided and each has several Twists that you may choose to apply to create just the adventure that you want. This part is rounded off with a couple of items, some rumours you can scatter around and a few random encounters, and a one-page map of the Caverns themselves.
OK, so why four different files? There's a full-colour landscape one to read onscreen, and a black & white portrait one for printing out. The other two files provide for a neat booklet-style print, again black & white but designed to be folded and interleaved. So plenty of choice!
The ideas themselves have plenty of potential and variety, and you ought to be able to come up with something after reading them through, matching them to your own preferred game and setting and doing some basic preparations.