The episode picks up in the , where Team 7 is under a terrifying assault by a mysterious "Grass Ninja" (who is actually the legendary Sannin, Orochimaru in disguise).
: Despite the massive blast, the enemy survives, revealing his true face— Orochimaru . Impressed by Sasuke's potential, Orochimaru extends his neck and bites Sasuke , leaving behind a Cursed Seal before disappearing into the forest. Naruto Episode 30
While there are a few series in the franchise, "Naruto Episode 30" typically refers to the high-stakes battle between and Orochimaru during the Chūnin Exams . The episode picks up in the , where
: The episode ends with Sasuke collapsing in agony from the mark, while Naruto remains unconscious, leaving an exhausted and frightened Sakura to protect them both alone. The episode picks up in the