Batman blasts into the sewers to provide an escape route; he and Superman end up in the Batcave, wherein Alfred removes the kryptonite bullet. Batman discovers that Metallo is a possible suspect in his parent's murder when suddenly an older, different Superman boom tubes into the cave and proceeds to try to kill both Superman and Batman. Superman retrieves the aforementioned Kryptonite bullet and shoot old Superman with it whereupon he utters a cryptic warning about Luthor and boom tubes out. Meanwhile, President Lex Luthor has failed in an attempt to blow up the asteroid with ICBMs. To simultaneously save face and to strike at his mortal enemy, Luthor places a 1 billion dollar price on Superman's head so that he may be brought in to face charges of "crimes against humanity".