Jack Ramota (Robert De Niro) was born in Brooklyn, New York. Jack, who has been boxing training since he was a child, quickly made his mark in the boxing world. He punched quickly and ruthlessly in the competition. He acted like a bull and was called the "Angry Bull." Although Jack performed well, because he was upright and unwilling to surrender to the arrangements of the Mafia, he was never allowed to challenge the gold belt of the boxing champion at that time. After many defeats, Jack finally succumbed to the mafia and obeyed the arrangement and lost a game. After that, Jack challenged the boxing champion as he wished and was successfully crowned. After his coronation, Jack not only did not experience the expected excitement, but instead saw through the various shady scenes in the boxing world and decided to quit.