The Patent Leather Pug.

The morning after his engagement party, wealthy young New York playboy Billy Hepburn awakens, battered and bruised, but without any memory of what happened the night before. Billy's valet then informs him that he and prize fighter Battling Burke had gotten into a brawl over Billy's fiancée, and Burke won. Determined to regain his honor, Billy goes into training, with his valet's help.