NS ep. 27 "The Impossible Dream"

Chiyo injects the last remaining antidote into Sakura and manages to stab Sasori in his only living part, his heart, using the Father and Mother puppets. With Sasori immobilized, Chiyo revives the nearly dead Sakura using her Resurrection Technique. As he dies, Sasori rewards Sakura for defeating him, telling her where he planned to meet with one of his spies who had been working undercover as one of Orochimaru's subordinates. Meanwhile as Kakashi and Naruto are pursuing Deidara, Kakashi reveals his plan to activate his version of Mangekyo Sharingan.