An American girl on holiday in the English countryside with her family finds herself in hiding and fighting for her survival as war breaks out.

Daisy, a teenaged New Yorker, is sent to England one summer to stay with cousins she has never met. Initially resentful, she soon finds herself living in a dreamy, pastoral idyll as she falls madly in love. But this perfect summer is blown apart by the sudden outbreak of a war. The family is separated and Daisy is forced to embark on a terrifying journey to be reunited with the boy she loves.