You know the drill, here are the titles and descriptions for episodes 172-175.
Episode 172: Despair, Torn Heart
According to Amachi, the medical ninja who assisted Orochimaru, the attack on the money ship has begun. The Konoha group escape Kikai-jima and chase after Amachi’s group. However, the Sea Country fleet is already on the verge of being destroyed. The Konoha ninjas and Amachi’s group begin their battle around the money ships. Isaribi, who had her body remodeled in Orochimaru’s experiment, wants to have her body returned to normal by Amachi, so she challenges Naruto.
Episode 173: Sea Battle, Released Power
Amachi is defeated thanks to Naruto, but the battle with the immortal summon, the sea monster, remains. To defeat the sea monster, Naruto summons Gamabunta.
Episode 174: No Waaaay! Celebrity Ninpou: Kinton Jutsu
The richest man in Konoha, the jeweller Kunijirou, is despairing over his daughter Kunihisa, who cares only about money. He consults with Tsunade, who assigns Naruto to spend a day with her and show her what it’s like being a ninja. Naruto tries to get her to help with his Genin tasks, but Kunihisa pays her escorts to take care of him.
(Note: The title is a pun. Kinton is, like Katon and Suiton, one of the five elemental types associated with the ninja. However, the kanji also means “money”, which applies to this episode.)
Episode 175: Dig Here! Woof! Woof! Search for Buried Treasure
Naruto, Kiba and Hinata have been given a mission to search for buried treasure. Tsunade tells them that if they fail, they’ll be sent back to the Academy. Under the pressure that they can’t fail under any circumstances, the group heads off to find buried treasure.
Our thanks to Pazuzu for the info. Still no Kakashi Gaiden in sight, but it should be soon…