"This is Batman. Ace Chemicals is the source of the Joker's toxin. T.O. Morrow created it - and he's taken over the entire factory to create his insane mutations. I'm still vulnerable from the last dose of Morrow's toxin, but you should have immunity. Take down Morrow's operation so we can clean up his madness and create a more effective antidote." — Batman

No Laughing Matter is a level 30 mission started upon the completion of Emergency Response. It is the introductory mission to the Ace Chemicals alert.


T.O. Morrow, Joker's partner in creating the Joker toxin, has taken over Ace Chemicals to create an even more lethal chemical formula. Shut down his operation so Batman and the GCPD can clean up the fallout.