Explore the oceanic realm of Neptune, the Dread Lord, and the cult that reveres him in the material plane! Uncover the secrets of the plane of water, fight the beasts that lurk in the depths, and use the spells and artifacts of the profundities.

This 30-pager has everything you need to get started on that underwater adventure you've been planning. There will likely be a part two with more of all the goodness in this book, so stay tuned for it!