Batman becomes defender of what may be the Holy Grail in a fully-painted hardcover graphic novel! When a simple bowl that may or may not be civilization's greatest prize finds its way into Batman's hands, it sets off an unforgettable battle between the forces of good and evil. This action/adventure story features an array of Batman's classic villains, including Catwoman, the Penguin, Two-Face, Ra's Al Ghul, and a host of enigmatic mercenaries who long to possess this mythical artifact.