Miles Machree is content to live with his mother, brothers, and sisters, tilling the soil in Glengarry, Ireland, until he meets attractive Sheila Lynch, touring with her father, a bank president in New York, who years earlier left the village. Because she chides him for not having ambition, and encourages him to come to America, Miles follows Sheila home and soon, with the help of his uncle, Malachi Nolan, a saloon keeper and alderman, becomes a policeman. Although he is disappointed to learn of Sheila's engagement to her father's secretary, Allyn Dexter, when Miles overhears Dexter and Dr. Leon Wilson discussing a scheme to substitute counterfeit money for bank bills, Miles tries to protect Dexter for Sheila's sake. After Sheila is lured to the counterfeiter's den, Miles rescues her and, during a scuffle involving the Secret Service, Dexter is killed. The counterfeiters are captured, and Miles becomes Lynch's private secretary and son-in-law.