Ton Ton! I'm Counting on You! (走れトントン!お前の鼻が頼りだってばよ, Hashire Tonton! Omae no Hana ga Tayori Dattebayo) is episode 143 of the original Naruto anime.
Shizune and her team encounter Mizuki, but all of them are defeated. When Tonton comes back to warn Tsunade, Naruto takes the initiative to find Shizune with Tonton's help. Kakashi arrives and finds out the situation. Unfortunately, he has another mission. So, he summons Pakkun who will guide Iruka to Naruto. Iruka eventually catches up to Naruto and Pakkun sends Tonton back to the village. Pakkun leads them and they soon find Shizune. They chase after Mizuki, when they soon fall into a trap. Iruka reveals that Shizune is not Shizune, but actually Mizuki. Mizuki attacks Iruka while Naruto deals with Fūjin and Raijin. Naruto soon finds that his attacks are ineffective.