Three Kryptonian villains from the Phantom Zone escape and expose Superman to red kryptonite causing him to age rapidly. The rest of the Super Friends get trapped by the villains and only Superman can free them from the Phantom Zone. Meanwhile, the Justice League Computer tells Superman the only possible antidote for his rapid aging is blue kryptonite. Since blue kryptonite is harmful to Bizarro, it may have an opposite effect on Superman. Superman must take the Supermobile to go to the site where Krypton blew up and get the blue kryptonite in time to save the other Super Friends. Using the ray device the three villains stole from Superman, he sends the Kryptonian villains back to the Phantom Zone.
