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.
An impecunious customer creates chaos in a department store while the manager and his assistant plot to steal the money kept in the establishment's safe.
A shipowner intends to scuttle his ship on its last voyage to get the insurance money. Charlie, a tramp in love with the owner's daughter, is grabbed by the captain and promises to help him shanghai some seamen. The daughter stows away to follow Charlie. Charlie assists in the galley and attempts to serve food during a gale.
Charlie is released from prison and immediately swindled by a fake parson. A fellow ex-convict convinces Charlie to help burglarize a house.