Sixth grader Hikaru Shindo stumbles upon a mysterious Go board with a blood stain on it. Before he knows it he's hearing voices, one voice to be exact. The voice of an ancient Go instructor, Sai of the Fujiwara. Sai occupies a space in Hikaru's mind. Hikaru is the only one who can see, hear, or talk to Sai. Sai's one and only desire is to play Go. But he can only do that via Hikaru's body. However, Hikaru has no interest in playing Go. Will Hikaru allow Sai to play? And who is this mysterious young boy, Akira Touya?

With the recent defeat of the Meijin's son, Hikaru goes about his day normally. However, Akira is obsessing over the game he lost. He won't do anything but stare at the Go board and replay the game that he lost. When he gets word that Hikaru is at a Children's Go Tournament, he rushes there hoping to confront Hikaru and ask for a rematch.

Akira is too good against everyone at Kaio's Go club. The members don't take this sitting down, as three of them plan to take him down.

The match between Hikaru and Akira comes to an end. Hikaru tells Akira that one day, he will tell him everything. At night Hikaru has a dream, with a surprise visitor! At the end, the song “Get Over” is played as we see everyone throughout the series. The Go world is changing and a younger generation has arrived!