This book is about the trials of a time traveling nineteen year old named Jackson. One day, he and his girlfriend, whose name is Holly, are sitting in her apartment when two people burst in the door. They then shoot Holly and tell Jackson to "jump" or time travel. He jumps back to 2007, which is way farther then he has jumped back before. But this jump is different. He is stuck in 2007 and can't get back to 2009. The rest of the book involves him trying to get back to 2009 and save his girlfriend.
I thought this was a wonderfully written book. The second I picked it up and started reading it I was hooked. I thought the author did an amazing job with the plot development, but could have done a better job with having more vivid descriptions of some of the scenes. Everything included, I highly recommend this book to the average teenager who likes fantasy.