From the back cover
This book contains a complete description of Rallu, the City-State of the Sea Kings, along with villages, lairs, and ruins of the Isle of the Blest. Also included are extensive descriptions of the Sea King's naval forces including general information about navies and sea life usable with all classic editions. In the book wyou will also find new classes, monsters, magic items, and spells, along with rumors, legends, detailed locales, and encounters. This product also includes a removable double-sided 17" x 22" folded map of both The Isle of the Blest and the City-State of the Sea-Kings.