That was actually a pretty good filler. What's-his-face-with-the-bugs told Naruto about a rare bug that can "smell" chakra like a blood hound. Naruto grabs Sasuke's forehead protector, talks to Tsunade, and Naruto, Kiba, Bug-dude, and Hinata go on a mission to find one. They fight some random Rock nin, and Naruto farts on the bug they were looking for.