Kryptonian villain General Zod (Terence Stamp) and his henchmen are accidentally freed in their outer-space imprisonment and threaten Earth with jealousy, only as Superman (Christopher Reeve) decides to renounce his superpowers because of his new love, Lois Lane (Margot Kidder). This version of the film is predicated on footage shot by director Richard Donner before being replaced on the undertaking, plus it has material not found from the picture's original 1980 release.