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!

The main storyline takes a holiday, making way for six tales that offer fresh insight into the characters and lives of Akira Toya, Tetsuo Kaga, Asumi Nase, Yuki Mitani, Atsushi Kurata and Fujiwara-no-Sai. Hikaru Shindo figures in some of these and takes center stage in the final tale when he challenges a crooked antique shop owner to a game of go in an attempt to restore an heirloom vase to its rightful owner.