So Naruto successfully summons the huge toad, but Gamabunta isn't very pleased with it and is determined to show the little orange jump-suited ninja who is in charge. The two characters clash for dominance and respect, but can Naruto earn his right to summon Gamabunta by staying on his head for a full day? It's a great episode that is worth watching to see how it turns out.
Volume 15 continues with a confrontation with an unusual visitor in Rock Lee's hospital room and then wraps it up with two episodes that kick off the Chunin Exam Finals.
Of course, this being Naruto, it isn't as simple as just getting to the arena and starting the fights. Naruto is running late and he has to get to the other side of the Hidden Leaf Village before the tournament starts. Thankfully, he has Konohamaru, and with him, knowledge of secret passageways throughout the town. Unfortunately, many of them are dead ends or leave the pair even further from the stadium than before. This is one of those episodes that happen throughout the series to help break the tension. Nothing really happens in this show but some nice, generic slap-stick. It's a fun distraction and a great way to get ready for the last episode in this volume, a battle between Naruto and Neji.
Naruto Vol. 15: The Evil Hand Revealed does a pretty good job of wrapping up the events that take place between the Chunin Preliminaries and Finals and then kicking off those fights not only with the start of a great fight, but also the mystery of Sasuke's apparent disappearance.