Womanpower (1926)

Spoiled rich boy Johnny Bromley, goaded by the sneering laughter of the cheap Dot and by his father's open contempt, retires to a prizefighters' training camp for rehabilitation. There he meets Jenny Killian, daughter of the camp owner whose encouragement and love help him overcome the unpleasant memories of Dot's accusations of cowardice. When at last he is a success, he wins the hand of Jenny in marriage and his parent's forgiveness; upon meeting his former rival (The Broker) with Dot, he surprises him with a swift punch in the jaw.