Avatar: Saga of Ayumi Book 3 trailer

(We open up to Ayumi meditating. We then see Ayumi in the Spirit World surrounded by Yue, HeiBei, Koh, the Mother of Faces, Tienhai, Wan-Shi-Tong, Aye-Aye and Old Iron. We then cut to a young man [Sun] flanked by Dark Spirits. We then see the Dai Li trying to hold off Dark Spirits in Ba Sing Se. We then see Ekta dressed in updated Kiyoshi Warrior armor. We then cut away to a shot of the Serpent from the Serpent's Pass, now bearing glowing purple eyes, roaring in pain as the Unagi bites into its side. We then finish with a shot of Ayumi launching herself off of Zhēnzhū and firebending at a swarm of Dark Spirits before we get to the title. We then see Ayumi in a dark corridor)

Vaatu: It's been a while... Raava.

(Ayumi whips around in fear)