What happens when Gotham City's Clown Prince of Crime discovers a thousand-year-old relic that will make him invincible? Unfortunately, Batman is about to find out, as two of history's most madcap maniacs join forces-literally! To add insult to injury, Joker/Mask becomes a prime-time television sensation. . .and you don't want to know how far he'll go to keep his ratings high! Joker/Mask is explosive action with insane pop culture appeal!