Episode 16 - The Secret of Jinchūriki "Jinchūriki no himitsu" (人柱力の秘密)

Kakashi's and Guy's teams both figure out that their battles with the doppelgängers were set-up to delay them from coming to Gaara's rescue. Chiyo reveals that in attempts to control the power of the tailed beasts they were bound to human hosts called "Jinchūriki", and that the human host dies when the beast is extracted — increasing the urgency of saving Gaara. Kankuro is awake and joins a meeting of the Sand council where the history of the Sand village is explained. Both teams stop to rest since their battles have taken their tolls and in preparation for the battles to come. Akatsuki sends Zetsu to "dispose" of the doppelgängers corpses.