The discouraged Boyd runs into an unexpected offer from a fast-talking confidence man, who introduces himself as "Mr. Applegate." "Applegate" offers to transform Joe Boyd into Joe Hardy, a young baseball superstar, and facilitate his signing with the Senators' front office so that Hardy can help salvage the Senators' lost season. Boyd, suspicious, negotiates with "Applegate" and extracts a promise that the transformation will only be temporary and, after helping the Senators win a suitable number of games, Hardy will be able to re-transfer himself back to his Joe Boyd personality.
The transformation takes place, Hardy joins the Senators, and all begins to develop as "Applegate" had predicted. However, the new baseball superstar begins to realize that his deal with "Applegate" may not be so temporary and he may have let himself in for more than he had expected to get. As Hardy's doubts grow over his predicament, "Applegate" presents Hardy with love interest Lola, depicted as a glamorous temptress in the style of the 1950s.