With her fifteenth birthday approaching, tess is running out of time. She must decide who -- or what -- she will become when she makes the final switch of her life. To make the impossible decision even worse, she finds h...With her fifteenth birthday approaching, tess is running out of time. She must decide who -- or what -- she will become when she makes the final switch of her life. To make the impossible decision even worse, she finds herself shipped off to relatives in the country, miles from home, her parents, and, most important, her best friend, kevin.