Rosoff's story begins in modern day London, slightly in the future, and as its heroine has a 15-year-old Manhattanite called Daisy. She's picked up at the airport by Edmond, her English cousin, a boy in whose life she is destined to become intricately entwined. Daisy stays at her Aunt Penn's country farmhouse for the summer with Edmond and her other cousins. They spend some idyllic weeks together--often alone with Aunt Penn away travelling in Norway. Daisy's cousins seem to have an almost telepathic bond, and Daisy is mesmerized by Edmond and soon falls in love with him.

But their world changes forever when an unnamed aggressor invades England and begins a years-long occupation. Daisy and Edmond are separated when soldiers take over their home, and Daisy and Piper, her younger cousin, must travel to another place to work. Their experiences of occupation are never kind and Daisy's pain, living without Edmond, is tangible.

Rosoff's writing style is both brilliant and frustrating. Her descriptions are wonderful, as is her ability to portray the emotions of her characters. However, her long sentences and total lack of punctuation for dialogue can be exhausting. Her narrative is deeply engaging and yet a bit unbelievable. The end of the book is dramatic, but too sudden. The book has a raw, unfinished feel about it, yet that somehow adds to the experience of reading it.