When Gentleman Ghost awakens the undead monster Solomon Grundy, the members of the Justice League must use the technology at their disposal to subdue both Grundy and Gentleman Ghost.
Bizzarro, a not-very-bright duplicate of Superman, yearns to become a hero--and with some help from a pair of children he gets his chance when Metallo, a metallic monster with a kryptonite core, threatens Superman and Metropolis.
Superman is joined by Batman and Wonder Woman in an effort to stop Kryptonian criminal General Zod and his followers who have broken free from the Phantom Zone.
In the farmland outside Gotham City, all the farm animals are under the control of the Mad Catter, who is making them behave in bizarre ways and steal all the crops.
Ray Palmer has found a way to shrink himself and his dog Spot to atomic size and become the superhero Atom--so when friend and rival Doris Zeul comes up with a way of increasing her size and becomes Giganta, it is up to Atom and Spot to convince her of the error of her ways.