Miko and Ning-ning journey to the secret Miroku village, where they encounter Yaku, a half-blood demon ninja. They discover that the traitor Kamiri and the rogue ninja Kugutsu have raided the village and stolen the legendary Zipang sword. After a desperate battle where Miko and Ning-ning use a fiery alcohol technique to rescue Yaku from a pleasure-absorbing water monster, the villains escape with the treasure. Now allied, the three ninjas vow to hunt down the traitors and reclaim the clan's precious sword.