Chain Reaction is a 1996 American science fiction action thriller film directed by Andrew Davis, starring Keanu Reeves, Morgan Freeman, Rachel Weisz, Fred Ward, Kevin Dunn and Brian Cox. The plot centers on the invention of a new non-contaminating power source based on hydrogen and the attempts by the United States Government to prevent the spreading of this technology to other countries. The film was released in the United States on August 2, 1996.
While working with a team from the University of Chicago to convert hydrogen from water into clean energy, machinist Eddie Kasalivich inadvertently discovers the secret: a sound frequency that perfectly stabilises their process. After the project team celebrates with a party at the lab, project physicist Dr. Lily Sinclair finds her car unable to start, so Eddie gets her home by bus. Back in the lab, Drs. Alistair Barkley and Lu Chen are on their computers preparing to upload their discovery to the Internet so they can share the breakthrough with the world, when a band of men enter the lab and attack the pair.