After stumbling across a haunted go board, Hikaru Shindo discovers that the spirit of a master player named Fujiwara-no-Sai has taken up residence in his consciousness. Sai awakens in Hikaru an untapped genius for the game, and soon the schoolboy is chasing his own dream--defeating the famed go prodigy Akira Toya Since Sai's disappearance, Hikaru has given up go Meanwhile, undefeated by his failure to pass the pro test, Isumi plays his heart...