Orochimaru's nefarious plans for Sasuke are revealed, and Naruto vows to save his friend. But first he and the others must battle the mysterious Kimimaro, who has deadly past ties to the Sound Ninja Four! Kankuro, Temari and Gaara unexpectedly aid Konohagakure against the Sound Ninja. But what is behind this rekindling of the Leaf and Sand alliance?