It has been three years since Hiromi Oka of Nishi High was taken under the wing of Jin Munakata, a former tennis superstar and "demon" coach. Fresh from a national championship victory, Hiromi has been chosen to represent Japan in an international tournament in New York. Unfortunately, Munakata is suddenly hospitalized after his own demons finally catch up with him. Forced to continue without him, Hiromi must find the strength within herself to keep playing despite new challengers and heartbreaking tragedy.