When Naruto, Shikamaru, and Sakura are on a mission to deliver a lost pet to a certain village, they were attacked by Temujin, a mysterious knight troop leader. When the three become separated, Naruto and Temujin fight, only to end up falling off a cliff. When Shikamaru discovers a strange moving fortress, he decides to investigate on his own. Just what lies inside the mysterious fortress? What happened to Naruto and Temujin? And how is the Hidden Sand Village involved in all of this?

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