The Legend of Korra AU | Book One: Fire
Avatar Korra, convinced she has mastered firebending, and tired of waiting for approval to learn airbending, runs off after yet another failed trial to pass her firebending test. Master Katara having sensed something was amiss for some time made arrangements with her son, Tenzin to bring Korra to Republic City and stay with the Air Acolytes. They intercept Korra, and Tenzin tells her he will train her in airbending once her firebending meets the approval of a master he holds in high regard. Korra happily agrees and puts on a huge display of her firebending power, but General Iroh is not impressed. He tells Korra that the key to mastering firebending is control and restraint. She may have raw power, but she is nowhere near mastering firebending. Korra realizes she must humble herself if she ever wants to master firebending.