At the age of four, Sebastian Cody accidentally shot and killed his infant sister with his father's gun. Now, ten years later, he has lived with the guilt and horror for his entire life. With his best friend away for the summer, Sebastian has only a new friend--Aneesa--to distract him from his darkest thoughts. But even this relationship cannot blunt the pain of his past. It took a gun to get him into this. Now he needs a gun to get out.