Avatar: The Last Airbender (2005)

S2E5 Avatar Day

Aang and his friends stumble upon an Earth village celebrating "Avatar Day." However, they quickly realize that the festivities are rooted in anti-Avatar feelings, and Aang finds himself accused of a crime supposedly committed by a previous Avatar. Determined to vindicate Aang's reputation, Katara and Sokka return to a well-known location to collect evidence and uncover the real story behind the accusations.