Batman and Superman have been buried alive by Metallo. Unable and unwilling to go up out of the grave for fear of another Metallo attack, Batman uses an explosive charge to free them from the grave. They end up in the Gotham City Sewers and working together eventually returns to the Batcave via underground tunnels.

Meanwhile, in DC, Luthor and Captain Atom wait as a cache of nuclear missiles heads towards the Kryptonite Asteroid via an illegally obtained boom tube. The missiles fail and the meteor gets closer.

Back in the cave, Alfred has removed the bullet and patched up Superman. Batman has found out what Superman was trying to tell him about John Corben...according to files in S.T.A.R. Labs, Corben was in Gotham City the night his parents were murdered and also carried the same caliber weapon they were murdered with. While they argue, a boom tube opens and an older version Superman appears in the cave and attacks them. During the confrontation, older Superman explains that he is the future version of Superman there to stop him from doing something that will result in him killing everyone he knows and ending up alone.

Batman confirms that the doppelganger is in fact telling the truth and rushes to get the kryptonite ring. Future Superman attacks Batman and throws him into one of the Batmobiles and then threatens to drop the car on him. Superman fires Metallo's bullet from a shotgun at Future Superman. He disappears with a warning ("Beware...") before the bullet can strike.

In D.C., Luthor prepares to address the nation. Captain Atom once again requests to talk to Superman, which Luthor denies. Luthor goes on TV and informs the public that the meteor is coming and that Superman is responsible for bringing it here. He then offers a bounty of $1 billion dollars for the capture of Superman so he can face the charges of crimes against humanity.

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