Run, Kankurō

is episode 7 of the Naruto: Shippūden anime. Together with episode 6, they were originally aired together as an hour-long special.

Synopsis
Kankurō chases down the two Akatsuki members who had kidnapped his brother Gaara. When he catches up with them, he attacks one of the members using his three puppets; Crow, Black Ant and Salamander. However, Kankurō's opponent, Sasori seems very familiar with Kankurō's techniques, destroying Black Ant and Salamander without breaking a sweat.