Kenshiro rescues an elderly farmanme named Smith from Spade, a member of the Four Jacks under the employ of a mysterious warlord known only as King. The old man seeks to deliver a bag of rice seeds to his village, hoping to harvest them for the future. Ken and Bat take Smith back to his village, unaware that Spade and his men are following them. Spade, having lost his eye during his initial encounter with Ken, attacks the village and kills Smith in retaliation. Enraged by Smith's death, Ken kills Spade with the Hokuto Zankaiken technique, which makes its targets feel remorse before dying a gruesome death. After the battle, Ken plants Smith's seeds over his grave.