Superman III poster

GUS GORMAN [PYROR] is cheating the company he is working for and is taken before the boss ROBERT VAUGHN]who wants to control the world with his sister VERA who instructs GORMAN to make KYRPTONITE and he exposes the man of steel but it backfires as the man of steel turns evil and after a battle with himself takes on a supercomputer that's has a life of its own as it turns VERA into a robot andnearly destroys SUPERMAN but he manages to defeat the machine by exposing it to acid defeating the villians.

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