A ghost trapped in a Go board for a thousand years suddenly shares a body with a middle-schooler who doesn't care about the game. What sounds ridiculous becomes the most compulsively watchable 75 episodes on TV because it's not really about Go at all, it's about two people learning to want something bigger than themselves. Sai's hunger to play the perfect game, Hikaru's hunger to prove he's worthy of that hunger, they collide in a way that makes every match feel like watching someone's soul take shape on a board. The animation is nothing special. That stops mattering by episode three. This show costs you a weekend and teaches you why ambition and loneliness look so similar from the inside.

While searching his grandfather's attic, Hikaru Shindou finds an old Go board. When he touches it, a strange voice greets him and he passes out. On waking, he learns the voice belongs to Fujiwara no Sai, the ghost of a Go master who once taught the game to the Emperor in the Heian era and now dwells in Hikaru's consciousness. Sai dreams of reaching a divine level of play that no one has ever attained, and he means to get there by playing through Hikaru. Hikaru has no interest in board games, but he grudgingly agrees and places the stones wherever Sai tells him. Everything changes when he meets Akira Touya, a young Go prodigy, and slowly a passion of his own begins to grow. With a new rival to push him, Hikaru takes his first steps into the world of Go in a supernatural sports comedy.