Big Adventure! The Quest for the Fourth Hokage's Legacy Part 1 (大冒険! 四代目の遺産を探せ・前編, Daigōken! Yondaime no Isan wo Sagase Zenpen) is episode 170 of the Naruto: Shippūden anime.
The story goes back to right before the start of the final rounds of the Chūnin Exams. As Naruto trains in preparation for his upcoming match, he hears Jiraiya speak of "the Fourth Hokage’s legacy".
- A poster of Naruto Shippūden 4: The Lost Tower appears in this episode.
- Konohamaruis seen with the helmet he wore durring his first appearence, but at that point in the sires he was wearing goggles on his head, not the helmet.