A man with an Irish accent knocks on Eilis Fiorello's door on Long Island and in that moment everything changes. Eilis and Tony have built a secure, happy life here since leaving Brooklyn - perhaps a little stifled by the in-laws so close, but twenty years married and with two children looking towards a good future. And yet this stranger will reveal something that will make Eilis question the life she has created. For the first time in years she suddenly feels very far from home and the revelation will see her turn towards Ireland once again. Back to her mother. Back to the town and the people she had chosen to leave behind. Did she make the wrong choice marrying Tony all those years ago? Is it too late now to take a different path?