Ninjago and Avatar: When Powers Collide
Status
Summary
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.