Wanderer

is episode 144 of the Naruto: Shippuden anime. It starts the Six Tails arc

Synopsis
On a lonely cliff a young man and a girl and her servant are being attacked by a group of four ninja. The servant sends word to the Hidden Leaf for aid, the young man and girl named Utakata and Hotaru leave while the servant stays behind to fight. Back in the Leaf Tsunade tells Shizune of the Tsuchigumo clan and an elder named En no Gyoju who developed a forbidden jutsu and the Leaf are to prevent the theft of the jutsu while Team 7 and Yamato arrive to assist Utakata and Hotaru, Utakata leaves immediately who blows a bubble and floats away.