”WHY SO SERIOUS? HAHAHAHA…” In his secret crypt, Joker is trying to synthesize the antidote to the substance that transformed him into a monster. Meanwhile he is sick of demureness and threatens to release a toxic laughing gas in 60 minutes throughout the city! Do you have the mental capacity to withstand his pranks and save the world? Will you find, with the help of Dr. Young, the intidote that will make him boring again or he'll convince you to join him in a life of madness and crime?