Jamie was five when the bombing in London killed his sister Rose. This is a story about how his family coped after the loss. In the trailer, Jaimie alludes to the fact that he has a new friend. One glimpse at his friend's picture and you can guess that this might cause problems. The trailer is adorable, and although it starts off sad, the end note is one of hope and better times. Plus, the kid portraying Jaimie looks like Hugo Weasley from Harry Potter. Which is cool.