Avatar Aang and Fire Lord Zuko stand on a cliff in the midst of a driving rainstorm with the specters of Roku and Ozai standing behind them. Below, on the mud-soaked battlefield, Fire Nation and Earth Kingdom troops clash as lightning rends the sky. Zuko shares his doubts about the course of action he has chosen with Aang, saying that while he wants to protect his people, he feels that all he can hear is Ozai's voice, which he blames on Aang's decision to not kill the former Fire Lord. While Ozai's ghost tries to convince Zuko that only the Fire Lord can decide what is right, Roku tells Aang that Zuko has become too unstable, and that he must keep the promise he made to him when the firebender had more clarity of mind. Zuko, overcome with despair, again asks Aang to kill him, who finally a