This film is adapted from the deeds of the famous baseball player Jackie Robinson. He was born on January 31, 1919 and died on October 24, 1972. He was the first black player in the history of the American Major League Baseball. On April 15, 1947, he wore a No. 42 jersey and played as a first baseman for the Brooklyn Dodgers. Before that, black players were only allowed to play in their own Negro Leagues. Although slavery in the United States had been abolished for a long time, many areas still practiced racial segregation policies, and ubiquitous racial prejudice still strongly influenced all levels of society. Therefore, the day when Robinson stepped onto the stage of the major leagues is recognized as one of the most important events in the history of the modern American civil rights movement.