The computer scientist Harry Benson has a violent behavior caused by seizures and blackouts from his epilepsy. When he is invited to be submitted to an experimental surgery to implant electrodes in his brain by a renowned team of doctors, he accepts the invitation despite the opposition of the psychiatrist Dr. Janet Ross. The electrodes would detect the seizure before it happens and then stop it, and the surgery is a success. The doctors induce seizures to Benson monitored by computers to test the effects of the healing, but Benson flees from the hospital with his friend Angela Black. Now the doctors and the police run against time of the next seizures that are turning Benson's violence to next level of killing.
—Claudio Carvalho, Rio de Janeiro, Brazil