In Monroeville, Alabama 1983, Stevenson visits the south after just graduating law school. He is a young lawyer that is visiting death row to see who he could help. He meets many men including Walter McMillian who insistent that he was innocent.
Stevenson meets up with Walter and learns the case. Walter explains how he is innocent and being wrongly convicted for Rhonda Morrison's murder. Bill Hooks and Ralph Myers gave false testimonies to make Walter look guilty. Walter had recently been dating a white women, so that encouraged the court's decision quite a bit.
After hearing the case, Stevenson becomes Walter's lawyer. After many ups and downs, Stevenson gets a re- trial. Myers finally admits his first testimony was false and many doctors prove that he was telling the truth. Investigators named Tom & Cole prove that Walter is innocent which helps out a lot. Stevenson also find new helpful evidence that makes Walter innocent.
After the re- trial the court rules Walter innocent. The judge was very cooperative and releases Walter from prison. After getting his things he was greeted by his family, friends, and the press.
Returning back to normal life, Walter begins logging again. He breaks his neck which causes him to begin a new buisness of selling old car parts. After a while his buisness begins to not do so well so he begins drinking. His health decreases dramatically and is diagnosed with dementia which puts him in a nursing home.
Walter begins to imprison himself in his own mind due to trauma of being in prison. Walter begins living with his sister and sadly passes away in the middle of the night. A funeral was held for him at Limestone Faulk A.M.E Zion Church. Stevenson gives a very heartfelt speech about Walter and explains how Walter has taught him a very special lesson.