剧情简介 Director Rebecca Carpenter's father, Lewis Carpenter, was a World Championship running back for the Detroit Lions and Vince Lombardi's Green Bay Packers. When he dies, her family receives a surprise request from Boston University's brain bank - with shocking results. Lew becomes the 18th NFL player diagnosed postmortem with Chronic Traumatic Encephalopathy (CTE), a degenerative neurocognitive disorder that can cause episodes of rage, social withdrawal, and other unusual behaviors. In disbelief, Carpenter finds herself at ground zero of an unfolding public health controversy and embarks on a three-year odyssey across America to explore the far-reaching implications of this "new" disease.