A computer scientist and his staff develop a super computer that's assigned the task of the defense of the U.S. Once online, the computer gets a little help from a super computer developed by the U.S.S.R., and the problems begin.

Things get interesting in a hurry as the computers decide that man is best not left to his own devices. This movie's got a neat trick up its sleeve in that it doesn't really develop any of the characters before it launches into the story of the computer Colossus. But, as we experience the battle between man and machine, we become fond of many of the characters.

Doctor Forbin is very smug and aloof in the beginning but as he struggles to regain control of the situation, he becomes more and more likeable, even heroic. He and Dr. Cleo Markham become more than associates under the watchful eye of the peeping tom Colossus. The build-up to their romance is involving. To add to the success of this movie, it comes complete with an awesome ending.