Irish domestic worker Norah King's decision to ask her wealthy employer, Caroline Parker, for an elegant red coat the Beacon Hill matriarch has marked for donation ignites a series of events that neither woman could have fathomed. The unlikely exchange will impact their respective daughters and families for generations to come, from the coat's original owner, marriage-minded collegian Cordelia Parker, to the determined and spirited King sisters of South Boston, Rosemary, Kay, and Rita.