from his perspective she was kidnapped so he did stuff out of love but as soon as ozai thought zuko wasn't a firebender he basically disowned him immediately and favored azula natural then gave his son a permanent scar because he cared about his nation and didn't want innocent soldiers ...
Fire is burning out of control, and the world is out of balance. A couple of kids find the Avatar, a young airbender named Aang, frozen in some ice near the South Pole, and set off on a quest to end the war and save the world. They are pursued by Prince Zuko, a Fire Nation ...