A recruit grows up quickly in the army and becomes a mature soldier.

1975 on the south west border of China

During the 12th Century a boy is born to a tribal chief. He is named Temujin, which means "blacksmith." Nine years later, his father is murdered by the Tartars After a long struggle, just when Temujin reclaims tribal chief status, the Merkit tribe kidnaps his wife. In order to fight against the Merkits, Temujin has to use his mother as a pawn in exchange for troops from ally tribes. Temujin manages to rescue his wife only to realise that she is pregnant with the enemy's child. Enduring tremendous anguish, Temujin throws himself into battle against the Tartars and slaughters the leader of the intruders. He eventually takes his wife back and accepts her child. Later on, he begins a campaign to unify all Mongolian tribes. By the age of 40, he is bestowed the title "Genghis Khan", which means "oceanic ruler".

Ten years before the outbreak of the Second World War in Asia, a Japanese Go master and his Chinese rival meet in China to play a game of Go (loosely described as an Asian version of chess). It soon becomes evident that the Chinese master's son is the most talented player that the Japanese master has ever encountered, and he convinces the boy's father to let him bring the child back to Japan to train him as a professional Go player. Years pass, and as the young Chinese master grows to maturity in Japan, the Japanese invasion of China forces him to choose between his triumphant career and his loyalty to his native country. His decision is complicated by his marriage to the daughter of the Japanese master, with whom he has produced a child. His choice will profoundly alter the lives of two families. Their saga serves as a reflection of the tragic relations between their two great countries, and the possibility of reconciliation and healing.