From the back cover:
Deep below Firetop Mountain is a dungeon. A very special dungeon.
For here resides the Warlock, an evil magician of immense power, protected by guards, traps and monsters. A group of special Heroes are needed to defeat the Warlock and free the surrounding countryside of his malign influence.
Based upon the classic gamebook and featuring original and new illustrations, this adventure will challenge and entertain your players!