After surviving war and returning to California, Olympian and World War II hero Louis Zamperini tries to rebuild his life. He marries Cynthia Applewhite, but untreated PTSD leaves him battling constant nightmares, anger, bitterness, and deep depression. As his struggles strain their marriage, Cynthia urges him to attend the 1949 Billy Graham Crusade, opening the next chapter in his true story of forgiveness and redemption.