I like the idea that they are together as a group of friends and you get to learn a bit about their characters before this huge upheaval in their lives.
The book is set in Australia, which also entices me, as I lived in Australia for awhile when I was 17. What would I have done if something like this would have happened when I was living there. Hmmm...that 's what I love about these books. They make you think.
This is the beginning of The Tomorrow Series. I will be interested to see what happens in the next book.