Thirteen-year-old Martha Zachary thinks her biggest challenge is on the basketball court, but when she meets a gray-haired man with twinkling blue eyes, she learns her greatest trials are yet to come. Merlin, the wizard of legend, tells her that he is on a mission from God; he must train her for her calling - to lead others in the final faceoff between good and evil. How can she add the wizard's lessons to her busy life without losing her best friend, Anna, or alienating her basketball teammates? What's more, can she really rise to the calling? This inspirational and exciting story peaks in a locker-room showdown with a demon and his shadow army - right before the big game