From the back cover:
The Batman Role-Playing Game gives your imagination the tools to bring your favorite crime fighters to life. Whether you play the Batman, Robin, Batgirl, Commissioner Gordon, or a character that you create yourself, you're ready to contend with the sinister Joker and his minions.
Based on the award-winning DC Heroes Role-Playing game, this easy-to-learn game will delight you and your friends with everything you need to start playing. Then you're prepared to create even more exciting adventures to enjoy for hours on end.