Unimpressive, 24-year-old virgin, Eamonn (Kris Marshall) lives in Belfast with his mother, during the Troubles. Local girl, Mary Malloy (Tara O'Neil) decides that since she has probably slept with every man in town Eamonn should be next on her list. He proves to be quite a catch... and Mary gets pregnant even though she took precautions. A doctor discovers that Eamonn has a very high sperm count and, with the birth rate in Ireland decreasing, Millicent (Bronagh Gallagher) decides to hire out Eamonn to women whose husbands have been firing blanks; all with the blessing of the local Catholic church which sees it as morally better than artificial means.