Aang will meet Zuko like this
Sokka: [while recruiting in??Tea Shop)??And what's *your* story?
Zuko: My story? It's exactly the same as your story, just one chapter behind. I chased a boy??across the??seas. The pursuit cost me my crew... my?? thrown, my??honor??and my life.
Sokka: [a pause, as it dawns on him] ... Prince Zuko?
Zuko: [suddenly angry] No, not anymore, weren't you *listening*?
Zuko: [drunk and angry] So am I worthy to serve under Avatar Aang?
Aang: [tries and fails to hide behind his pole] You're hired!
Zuko: Sorry. Old habits and all that.
[smiles and about to attack and Katara attacks and all in Ba Sing Sai tea shop attack while playing music as Aang searches better clothes.]
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