Young Clark Kent discovers his true identity; and, as an adult, presents himself to Metropolis as Superman.

Superman thwarts a plot by Lex Luthor to sell the LEXO-SKEL SUIT 5000 to Kaznian terrorists, via their agent John Corben.

Brainiac, once Krypton's all-knowing planetary computer, comes to Earth as part of his information-gathering trek across the galaxy. But, as Superman discovers, Brainiac's intent after gathering the world's knowledge is to destroy the Earth.

Superman decides to release Mala, a Kryptonian criminal, from the Phantom Zone, but when Mala proves too power-hungry for this world, Superman tries to send her back. Mala escapes with the Phantom Zone Projector and releases Krypton's most notorious traitor, Jax-Ur.

Superman and Professor Hamilton start building a new Phantom Zone projector to balance the odds. However Jax-Ur and Mala manage to send Superman into the Phantom Zone, and then destroy the Projector. As their decimating attacks begin, it's up to Lois and Professor Hamilton to rescue the Man of Steel in time.

Lex Luthor is forced to build a new body for Brainiac who has downloaded himself into LexCorp's computers.

Bizarro learns of the destruction of Krypton and attempts to recreate the destruction in Metropolis.

After Bruce Wayne is kidnapped, Superman must go undercover as Batman to find him.

Brainiac travels back in time from the year 2979 to destroy a young Clark Kent before he can become Superman. The Legion of Superheroes, however, send three of their own to stop him: Saturn Girl, Cosmic Boy, and Chameleon Boy.