The primary "myth arc" follows the spirit of , who was defeated at the end of Season 1. Trapped in the Netherworld, he is tormented by his seven siblings—the other Demon Sorcerers—who demand he free them.

Season 2 of Jackie Chan Adventures consists of 39 episodes and marks a major shift in the series, moving from a simple hunt for magical artifacts to a high-stakes battle against ancient . The Core Storyline: The Demon Portals

: Shendu returns to Earth as a spirit and accidentally possesses his former ally, Valmont, forcing the two to share one body.