Before his English is good, they think he asks to hear a violin and the local violinist came and played his best. The young man takes the violin and shows he's a genius. They finally figure out that the ship he was on was going to America, where he was going to have a wonderful career.
He gets better and spends some time in the village where he meets a young woman who speaks Polish. She tells him that her brother is a famous musician and eventually she takes him to London to play beautifully for rich people. The sisters go to see him, but other people won't let him say more than hello.
There's a sub-plot where Ursula (Dench) is attracted to the young man because he reminds her of her boyfriend who went to war and didn't come back.
I liked this -- good actors, and Joshua Bell plays the violin -- and think other people would like it, too.