As the batter hits the ball, a smoke cloud appears, and before anyone knows what has happened, the Joker escapes using a spring-loaded device that propels him over the prison wall.

Batman and Robin go to the museum to check everything out — they were suspicious the Joker would strike there in revenge because he had not been entered into The Comedians' Hall of Fame.

Bruce Wayne asks to take it for a souvenir, and back at the Batcave, Batman and Robin try to figure out what the Joker is up to.

They come up with the idea that the Joker will be at The Gotham City Opera Company, where the Pagliacci aria "Vesti la giubba" is being performed.

While at the opera, Batman and Robin are caught when the Joker throws sneezing powder in their faces, and his henchmen grab our heroes.