After stumbling across a haunted Go board, irresponsible Hikaru Shindo discovers that the spirit of a master player has taken up residence in his consciousness. In his pursuit of the "Divine Move", Fujiwara-no-Sai awakens in Hikaru an untapped genius for the game, and soon the scoolboy is chasing his own dream - defeating the famed Go prodigy Akira Toya! START Sai's games on the Internet have Go players around the world guessing his true identity. Among them is Hikaru's rival, Akira, who suspects that Hikaru is hiding behind the screen name "sai". So intense is Akira's interest, in fact, that he skips the first day of his pro exam for a re-match. And on a rainy Sunday, the battle of wills begins anew...