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 Hikaru and Sai are both scheduled for matches with their greatest rivals--Akira Toya and his father, Toya Meijin. How will Sai play...