Imprisoned

After stumbling upon an Earth Kingdom town that has been taken over by the Fire Nation; Aang, Katara and Sokka learn that all earthbending has been outlawed, and anybody caught breaking this law is taken to a brutal prison. Through a string of events, Katara unwittingly gets Haru, an earthbender, imprisoned in the jail. Determined to rescue Haru, Katara sets out to topple the Fire Nation's grip on the village.