Storm

Prince Zuko has been searching for the Avatar for two long years. To date, he's found absolutely nothing. All he really knows is that the Avatar is an airbender, the last of his kind.
Fed up, Zuko begins searching every ship he meets, demanding information about the Avatar's whereabouts. This doesn't go over very well with most people, but what are they going to do against a ship full of firebenders? They answer Zuko's questions and breathe sighs of relief when the banished prince leaves.
Or at least, they do... until one day, Zuko boards a small sailing vessel, with a crew of only seven people. The only passenger aboard isn't too happy with Zuko's attitude, and she lets him know it--by force. Zuko declares war against their ship, and chases them to the Southern Air Temple. When he follows the impudent girl up the mountain, he never expects to catch her airbending. But once he does, he's certain that his quest is over--he's found the Avatar.
Her name is Storm--or at least, that's what she calls herself.
Is it true? Is she the last airbender? Is she the Avatar? And if so, what happened to Aang?
Only Storm knows the answers--and she's not talking.