Ever since Cassie was old enough to hold a tennis racket, her dad has been training her to be the best. Now age twelve, she's a star player with fast reactions, long legs, and an excellent backhand. But something is wrong: she just doesn't feel the same way about tennis anymore. She keeps having to choose between her friends and tennis -- between having fun or endless hours on the court. When Cassie is whisked away for a make-or-break month that will decide her future, she realizes she must make a decision. Does she have what it takes both on and off the court?