Rocky Balboa (Sylvester Stallone) is a former boxer from Philadelphia. He has a passion for boxing, but he only plays in third-rate boxing matches. One day, he fell in love with the saleswoman Adrian (Talia Shire) at first sight. Although the girl looks average and is introverted, it does not prevent Rocky from loving her passionately. With love, his career also began to go smoothly. In order to celebrate the 200th anniversary of the founding of the United States, a boxing match was held locally, and the winner would receive a high bonus of $150,000. An American boxing superstar was injured in the match, and the organizer selected Rocky to stage a "Cinderella"-style match. While facing a powerful enemy, it is also a good opportunity for Rocky to turn his career around and show his skills. Rocky struggled for 15 rounds on the field. With his face swollen and bleeding, will there be a miracle?