This starts out as a funny story that weavs the liefs of random People together over a way to go to the past for a couple of minuten before the Coffee gets cold. 
However, it turns out this book isn't just a funny premisse it is about taking responsibility, freezing at a moment in time you feel important, sacrifice and great loss. 
I cried my eyes out, i loved it. For a small book it can geven you a lot of emotions.