This takes place right after the comics and one year after the final battle. Fire Lord Zuko is almost assassinated, which causes Team Avatar to come back to the Fire Nation to help smooth things over and to find out who is behind the attack. Many people are angry with the politics of the world surrounding world leader...
If I could officially write a canon story that would allow Zukka to happen it would be this one and it takes place right after the comics. The New Ozai Society has once again been reformed but this time by a new familiar leader. During the Fire Festival Fire Lord Zuko hosts one of Team Avatar's members gets kidnapped...