Superman III

“If the world's most powerful computer can control even Superman...no one on earth is safe.”

Gus Gorman (Richard Pryor) is a jobless, easily distracted man who turns out to be a gifted computer programmer. Wealthy executive Ross Webster hires him to build a synthetic kryptonite, aimed at the one man he can't buy off, Clark Kent (Christopher Reeve). Richard Lester sends Clark back to his hometown and to Lana Lang (Annette O'Toole), while Webster's supercomputer waits with the means to bring Superman down.