Mechanical and human errors turn a small fire into a raging inferno in a commercial-residential skyscraper.

In northern California, Project Prometheus, a five-billion-dollar nuclear power station -- the largest in the world -- has reached the final critical stages of thermal equilibrium. Momentarily, the President of the United States is going to announce to the nation that Prometheus has been activated and that this country has the solution to the energy crisis within its grasp. But deep within the reactor's central core, the factor of human error sparks...

Elevators turn into crematoria, rooms explode into a living hell. and one by one, avenues of escape disappear. The celebrated opening of the world's tallest skyscraper turns into horrifying disaster as a holocaust leaps up and traps hundreds. A fireman and the building's architect lead the rescue efforts, but the protechnics remain the center of attraction.