Eric Braeden plays Dr. Charles Forbin, who created a supercomputer called the Colossus to control the nuclear defense of the Western Union. However, soon after, the Russians announced that they had built a similar computer for the same purpose - the Guardian. When these two machines begin to share information at a speed that no one can believe, they will try to disable them. Unfortunately, this will only trigger the anger of the machine; In retaliation, they fired weapons at each other's motherland. The result is a chilling scene, which may become too real these days. Corosos: For various reasons, the Forbin Plan did not achieve great success at the box office. One is that the cast is not widely known. Another reason is that its ending is not completely a happy ending. The third reason is that after the great success of Stanley Kubrick's 2001: a SPACE ODYSSEY, Universal has encountered difficulties in promoting it. The latter reason is obvious: the colossus and guardian, like Hal in Kubrick's film, have become the central figures here. The difference here is that although HAL fails due to programming conflicts, the colossus and guardian are still very stable, and there is no doubt that they know how to better protect humans than humans themselves. As pointed out by the computer:; An inevitable rule is that human beings are their greatest enemy" Joseph Sargent's director is very efficient, and Albert Whitlock's special effects works can succeed despite their age. This is a neglected gem in science fiction and should be revived.