Michael O'More, an American who lives in Ireland with his uncle, a horsetrainer for the Earl of Balkerry, loves Lady Mary Cardigan, granddaughter of the Earl. He finds a rival in Capt. Brian Fitzroy, a rake who intends to buy the impoverished earl's castle and marry Lady Mary. After nearly killing Fitzroy in a brawl over Lady Mary, Michael flees to the United States. There he becomes financially secure when department store magnate Abe Feinberg offers him a job. Feinberg commissions Michael to establish a linen mill on the earl's estate. He and Mary, who is in the United States evading Fitzroy, return to Ireland and marry.
Michael O'More
Lady Mary Cardigan
Captain Brian Fitzroy
Earl of Balkerry
Connors
Tim O'More
Paddy
Rafferty
Kate
Cyril
Abe Feinberg
Lulu Bellew