Superman has recognized at last the greatest threat to humanity, and he is out to rid the world of nuclear weapons. But Lex Luthor, now a nuclear arms entrepreneur, creates Nuclear Man--a solar-powered Kryptonia Android and genetic clone whose powers equal (and potentially surpass) those of Superman--to rid the world of the Man of Steel. Christopher Reeve once again dons the Superman costume, this time for director Sidney J. Furie (LADY SINGS THE BLUES), receiving wonderful support from regulars Margot Kidder, Gene Hackman, and Jackie Cooper in addition to newcomers Mariel Hemingway and Jon Cryer.