Dan (Kenneth MacDonald) knocks out the foreman (Boris Karloff) at his workplace so the foreman accuses him of stealing money from the company safe. Dan takes off to visit his girlfriend when they're attacked by a man who Dan eventually knocks out with a single punch. A boxing manager see this and signs him up.
Practical Effects
Actual 1924 boxing choreography, no stunt doubles
Acting
Karloff pre-horror, playing a punching bag
Production
Surviving print quality is a miracle itself
Director
Bruce Mitchell
Trivia, insights & behind the scenes
This was Boris Karloff's 22nd film; he wouldn't play Frankenstein's monster for another seven years. He was still being typecast as 'ethnic heavy who loses fights.'
The 'wrongly accused man becomes boxer' plot was so common in 1920s cinema that it basically WAS the American Dream.