This book is about a house cat named Rusty. One day Rusty goes into the forest and stumbles upon cats living there. He learns to be a warrior and faces many trials on the way. Another interesting aspect of the story is the fact that it is the cat telling the story; seeing the world through his eyes is interesting to me.
I love this book and the rest of the Warriors series because the books always keep me on the edge of my seat. I recommend this book (and series) to kids and adults 11 and up only because they often include death and violence.