My outside reading book

The book I chose to read for 4th quarters reading assignment is Tomorrow, When the War Began. It is written by John Marsden who was born in Australia. It came recomended straight out of Barns And Nobles. According to the summary on the rear of the book, it's about a few teens who go camping for a week and come back to find their home town has been invaded and taken over. Sounds maybe intense enough to fallow.