It's wartime Britain, and the bombs are falling. Pip has been evacuated to the country where she meets a new friend.

They become aware of another evacuee who is not fitting in so well.

The relations he is staying with are stigmatised by the locals as enemy aliens and possible spies.

When bombs fall actually in the village, an angry mob descends on this hapless family.

It transpires that they are refugees from similar behaviour in continental Europe, and this is a terrifying scenario for them to have to relive.