Team Kakashi are stunned to learn that Sai's true mission is to kill Sasuke. Naruto wants to believe that the smile Sai showed them was real, but there is a possibility that it was all an act. Meanwhile, Sai has reached Sasuke. Kill him, or save him… Which ending does Sai, a Foundation operative, choose? Sai and Sasuke battle it out, demolishing a part of the hideout. Naruto and the others follows the signs of chakra, and they are finally reunited with Sasuke.