After his return from the dead, Superman happens to stop by Gotham one night where Batman is facing off against Joker and Harley. He basically lands smack in the middle of the all out brawl. There is a moment of stunned silence before Harley being her awesome self holds out her hand and introduces herself. Superman in turn actually kisses Harley's hand and then turns his attention to Joker. They size each other up, Joker noticing that the alien is actually pretty handsome, while Superman can't help but think that even with all that makeup, Joker's pretty striking too.

Batman is struck speechless, but soon it is back to business as usual as Batman and Superman trounce Mista J and Harley. But right as they're being hauled off, Joker manages to slip Superman a piece of paper with an address on it.

When Joker and Harley break out a few days later, they arrive to their secret hideout to find the Man of Steel himself waiting to welcome them home. It's one hell of a party after that.