"Chain Reaction" is not based on a true story. The film, released in 1996 and starring Keanu Reeves, Rachel Weisz, and Morgan Freeman, is a fictional thriller centered around a scientist who discovers a groundbreaking process for generating energy. This leads to a conspiracy involving powerful interests trying to control the technology. While the themes of energy and scientific advancement may reflect real-world issues, the plot and characters are products of fiction.

"Chain Reaction" is a 1996 action-thriller film directed by Andrew Davis, starring Keanu Reeves, Rachel Weisz, and Morgan Freeman. The plot revolves around a scientist who inadvertently becomes involved in a conspiracy after a breakthrough in renewable energy technology. While it features an engaging premise and some thrilling action sequences, the film received mixed reviews from critics. Many praised the performances, particularly by Weisz and Freeman, but noted issues with the screenplay and pacing. It may appeal to fans of the genre, but it’s not universally acclaimed.

In the movie "Chain Reaction," the primary antagonist is a powerful and corrupt businessman named Paul Shannon, played by actor Morgan Freeman. He is involved in a conspiracy related to a revolutionary energy project that the protagonists, played by Keanu Reeves and Rachel Weisz, inadvertently get entangled in. Shannon's character serves as a manipulative force, seeking to control the technology for his own gains while putting the protagonists in danger as they try to uncover the truth.

"Chain Reaction," released in 1996 and starring Keanu Reeves and Rachel Weisz, was primarily filmed in Chicago, Illinois. Key locations included the city’s downtown area and various industrial sites. Additional filming took place in other parts of Illinois, as well as in the nearby state of Wisconsin. The film's urban setting plays a significant role in its narrative, showcasing both the bustling city life and the technological themes central to the plot.