From publisher blurb:
Fantasy Hero is a HERO System Campaign Book. That means that it provides all the information needed to play fantasy adventures using the HERO System rules. Within these pages you will find setting information, fantasy specifics, and a wealth of ready to use material. However, Fantasy Hero is not a stand-alone product; to use it the player must also have the HERO System Rulebook (4th Edition), which contains all the rules for the HERO System. The HERO System Rulebook can be purchased separately; it is also contained in Champions, the Super Roleplaying Game (4th Edition).