After discovering the beauty that is April Fool's Day and the ability to get away with anything on that fine day Bart speeds over to Gotham City to test out this day for himself on Robin (Tim). But as it so happens, he's not the only one in Gotham who's happy that it's April First as the "Clown Prince of Crime" himself sets up his own April Fools prank for Batman! So, prepare yourselves for the least likely dynamic duo of Batman and Impulse!