Back in the Spirit World, Aang was speaking with Roku.
"Roku, the Water Tribe's under attack. I need to find the Ocean and the Moon Spirits." Aang said.
Roku Popped out of the reflection in front of Aang. "The Ocean and the Moon are ancient spirits. They crossed over the Spirit World to the mortal world very near the beginning. There is only one spirit I know of who is old enough to remember."
"Who?" Aang said.
"The spirit's name is Koh, but he is very dangerous. They call him the Face Stealer." Roku said. Aang looked horrified. "When you speak with him, you must be very careful to show no emotion at all. Not the slightest expression, or he will steal your face." Aang looked even more horrified but calmly nodded, understanding the situation.
Xxx
Meanwhile, in the real world, Katara and Sokka arrived to where the ice broke earlier.
In the cave, Zuko was keeping warm with Breath of Fire while Aang, now tied up, remained in the Spirit World.
"I finally have the Avatar, but I can't get him home because of this blizzard." Zuko stood up and looked outside the cave. "There's always something. Not that you would understand, Khione. You're like my sister. Everything always came easy to her. She's a firebending prodigy, and everyone adores her. My father says she was born lucky. He says I was lucky to be born. I don't need luck, though. I don't want it. I've always had to struggle and fight and that's made me strong. It's made me who I am."
Zuko looked over at Khione and met her eyes. "I wonder why I can never shake your face from my thoughts..."
"Your face has always been on my mind as well." Khione said softly. "Despite my duty to my people and desire to find my sister."
Khione and Zuko sat beside each other.
"I think we our kindred spirits." Khione said. "That our fire inside burns the same. Every Firebender has an inner fire. It is only when we die that it goes out."
Xxx
Meanwhile, back at the invasion, the Fire Nation had breached part of the wall. On the lead ship, Zhao and Iroh were speaking.
"I don't need to remind you we have a time limit. If we don't defeat the Water Tribe before the full moon rises, they will be undefeatable." Iroh said.
"I assure you I have everything under control. I intend to remove the WaterBenders as a factor." Zhao said.
Iroh was Shocked. "Remove the waterbenders? How?"
"As I was saying, years ago I stumble upon a great and powerful secret: the identity of the Ocean Spirit's mortal form." Zhao said.
"What?" Iroh asked.
"I was a young lieutenant serving under General Shu in the Earth Kingdom. I discovered a hidden library. Underground, in fact. I tore through scroll after scroll. One of them contained a detailed illustration, and the words "moon" and "ocean". I knew then that these spirits could be found and killed. And that it was my destiny to do so." Zhao said.
"Zhao, the spirits are not to be trifled with!" Iroh said angrily.
"Yes, yes ... I know you fear the spirits, Iroh. I've heard rumors about your journey into the Spirit World. But the Ocean and Moon gave up their immortality to become a part of our world. And now they will face the consequences." Zhao said.