From publisher blurb:
The Origins Award-nominated San Angelo: City of Heroes -- the book that Ken Hite called "the very model of the superheroic city book" and Kurt Busiek (Astro City) called "an intricate, involving, well-realized gaming world" -- comes to you with M&M Superlink and Action! System character stats!
Contains 174 pages of incredibly rich source material, detailing the fictional city of San Angelo, the City of Heroes.
An entire superhero campaign setting in one book! A sample hero team, supervillains, and dozens of personalities that the PCs are likely to interact with in the course of every game!