To the amusement of their adult children and friends, long-divorced couple Don and Ellie Griffin are forced to play the happy couple for the sake of their adopted son's wedding after his ultra conservative Catholic biological mother unexpectedly decides to fly halfway across the world to attend. With all of the wedding guests looking on, the Griffins are hilariously forced to confront their past, present and future - and hopefully avoid killing each other in the process.

Robert De Niroas Don Griffin
Diane Keatonas Ellie Griffin
Ben Barnesas Alejandro 'Alex' Soto Griffin
Amanda Seyfriedas Missy O'Connor
Susan Sarandonas Beatrice 'Bebe' McBride
Katherine Heiglas Lyla Griffin
Topher Graceas Jared Griffin
Christine Ebersoleas Muffin O'Connor
David Rascheas Barry O'Connor
Patricia Raeas Madonna Soto