Avatar: The Last Airbender (2005)

S03E13 The Firebending Masters

Title: The Firebending Masters Plot: As Zuko instructs Aang in the art of firebending, he discovers that he has completely lost his ability to wield flames. To restore his powers, Zuko, alongside Aang, embarks on a journey to uncover the ancient origins of firebending hidden within the remains of a forgotten culture.