In this comedy, based on a popular play by George Kelly, an office clerk masquerades as a railroad magnate to impress a young woman. Though the enamored girl believes his every word, her mother is not so easily fooled. Still she says nothing and the emboldened fellow begins making even more outlandish claims and wild promises he could never keep. As a result, the boorish loudmouth loses his job and gets booted out of his girl friend's house. The braggart is then reduced to earning a meager living as a sandwich board man. While wandering about one day, he meets an inventor who shares his latest idea. The young man then helps the inventor sell his new gadget to the railroad. His good work wins him renewed respect and love from his gal. Eventually they marry. The nuptials do nothing to quell the doubts of the bride's mother.