Walking along with his bulldog, Charlie finds a "good luck" horseshoe just as he passes a training camp advertising for a boxing partner "who can take a beating." After watching others lose, Charlie puts the horseshoe in his glove and wins. The trainer prepares Charlie to fight the world champion. A gambler wants Charlie to throw the fight. He and the trainer's daughter fall in love.

Walking along with his bulldog, Charlie finds a "good luck" horseshoe just as he passes a training camp advertising for a boxing partner "who can take a beating." After watching others lose, Charlie puts the horseshoe in his glove and wins. The trainer prepares Charlie to fight the world champion. A gambler wants Charlie to throw the fight. He and the trainer's daughter fall in love.