REIGN OF THE SUPER BOYS! Following the events of DC K.O., Jon Kent comes face-to-face with his first ever archnemesis...the evil Master Txyz! This devilish fourth dimensional imp is out for blood...but not even the master himself could have predicted the return of...young Jon Kent?! Jon must adopt the new identity of Tomorrow Man and forge a new destiny for both himself and his time-lost counterpart! The Kryptonite asteroid plaguing planet Earth for months comes to a horrifying crescendo that only the Dark Knight himself can help avert! But can Batman get to the heart of the problem before El Caldero descends into all-out war? The stage is set and the pieces are falling into place for a new Kingdom to rise and a devastating new threat to unite the reign of the Superboys! Collects SUPERMAN UNLIMITED #11-15.