Jor-El, unable to convince the Kryptonian government of the pending destruction of the planet, plans to save his son while Brainiac makes him a fugitive.
A lowly janitor is transformed into the Parasite, a superhuman capable of draining and harnessing the energy, powers, and memories of any living being...including Superman.
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.