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 without revealing his secret identity? And will Akira's father stand in the way of Hikaru's long anticipated rematch with his son? The suspense is getting unbearable!