Harley gets busted out but the honeymoon period between her nad Mista J doesnt last amd during a breakup period Harly goes for a walk and ends up passing the building where the final showdown happened. She sneaks in, clever girl she is, and pokes about until she comes to the edge of the crater left by Diablo. There's still-smouldering ash at the epicentre, curious she prods at it and Diablo reforms, buck nude with a splitting headache.

Up to filler what happens from then on, fluff is perferred and if you can slip in Clever Doctor Harley (she was a doctor before getting her pan fried, some of that must come back eventually right?) Ill love you forever.