From the introduction: It was all going so well. As usual, a large group of you were moving across the border from Mexico to Texas, carrying much-needed prescription drugs for the uninsured poor. But then the border patrol ambushed your crew, and you were the only one who escaped. You made it to a border town, and all you can do is keep moving, get to your meet point. It's too late to go back now. Oh, and you're a squirrel, and you're carrying the pills in a hollowed-out acorn.