British stockbroker Nicholas Winton visits Czechoslovakia in the 1930s and forms plans to assist in the rescue of Jewish children before the onset of World War II, in an operation that came to be known as the Kindertransport.

Grace, a young closeted lesbian from a devout Catholic family, finally gathers the courage to come out to her parents over the sacred ritual of Sunday lunch. She brings her girlfriend along, hoping for the perfect moment—but every time she tries to speak up, her well-meaning but chaotic family unwittingly derails her plans in increasingly absurd and hilarious ways. What could go wrong? Absolutely everything, in this heartwarming and over-the-top coming-out farce.