Book Reports / English essay about "Tomorrow when the war began", first paragraph help [2]

Hey, I am writing a essay on Tomorrow when the war began and I was just wondering if you could help me please My Intro starts off like this

The novel is based on a group of seven strong teenagers that decide to go camping for a few days in the Christmas holidays to Tailor's Stitch. Tomorrow when the war began by John Marsden is about Ellie which is the main charter, Ellie and her friend Corrie oranized the trip, Robyn is a very powerful teenager as she is very brave to help give Lee the injections to save him and Kevin taking Corrie to the hospital after she had been shot in the back. This shows that all of the teenagers got along well throughout there camping trip.

and I was also wandering if you ould help me with the first paragraph