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Dr. Bennet Omalu (Will Smith) is living the American dream, just like he envisioned when he was a boy growing up in Nigeria. A forensic pathologist, he's intrigued by the death of former pro-football player Mike Webster, who died in disgrace at just 50 years of age. After an in-depth investigation, he discovers that repetitive head trauma chokes the brain and changes people's personalities. Unfortunately, the NFL already knows about the harm of repetitive concussions and wants Dr. Omalu to keep quiet about his findings.
Concussion opens Christmas Day.