The whole town grieves when General O'Leary, proprietor of a hunting estate in South Ireland, is eliminated in a mishap. His nephew, Jasper O'Leary, takes control of the state and soon has excited the displeasure of all, with the exception of Serena McGluskey, as a lot a schemer as he is a cad. Led by Thady O'Heggarty, the citizens plot to drive Jasper away. They utilize the event of "O'Leary Night", when the ghost of the first O'Leary walks the halls, to produce general mayhem.