The Ninjago ninjas end up in the Avatar universe along with Garmadon and the Serpentine. Tons of action and adventure happen along the way as the ninja work with Aang, Katara, Sokka, and other people they meet along the way. Other people from the Ninjago universe also come to the Avatar world, including some new foes and new allies.

A young man takes up a night shift job at the local rec-center. However, there is something sinister lurking in the building late at night. A mystery that no one knows about, and that no one has solved.

The return of Calamity Ganon is imminent in Hyrule, so the king Rhoam Bosphoramus assembles a knight, 4 champions, and his daughter Zelda to train to fight Calamity Ganon. As time goes on, the Champions learn more about each other, and become friends with each other.