Filmmaker Jeff Santo paints a moving portrait of the man some have called the best player who's not in the Baseball Hall of Fame: Chicago Cubs third baseman Ron Santo, a man he simply called "Dad." Reflecting on his father's 40-year career with the Cubs and as an on-air commentator, the director combines vintage game footage with interviews with former teammates and fans, featuring anecdotes from Ernie Banks, Fergie Jenkins, Bill Murray and Gary Sinise.