Zuko gets two light sabers and is from season 3 (just prior to Sozin's comet)
he's facing off against Palaptine with his standard light saber.
1. Khazan Arena
2. Fire Nation Palace
3. the Senate Room where Palpatine fought Yoda
4. Zuko replaces Anakin Skywalker in Episode III. would he trust Palpatine as much as Anakin did? would he be seduced by the Dark Side like Anakin and become the new Sith apprentice? or would he decide to kill Palpatine for the benefit of the galaxy?
[only the movies are allowed. I didn't mention it earlier because the ruling on primary cannon being movies alone was made so long ago I didn't think it was necessary]