Naruto vol 21

focuses on the mission to retrieve Sasuke after he defects from Konoha, with Tsunade sending a team led by Shikamaru (including Naruto, Neji, Choji, and Kiba) to hunt him down and stop him from joining forces with Orochimaru's Sound Four. The volume details the beginning of this intense chase, highlighting the conflict and the team's determination to bring Sasuke back, even as they face the formidable Sound Four.