okay, this DOES take place after the finale, so aang DID defeat the fire lord, just to clear that up.

"Aang…" The voice whispered, closer still, "Aang…"

"Hello?" Aang called back, hoping for an answer. "Who's there?" he struggled down the dark hallway to the flickering orange light. A single lantern swung from a hook, making shadows dance.

"Aang?"

"Aang!"

"AANG!"

The young avatar fell to his knees, hands clasped tightly over his ears. Still he couldn't drown out the deafening roar of the voices shouting, screaming his name. Wind whipped around him, and for once, he couldn't control it. It ripped at his clothes, spit dust in his eyes.

"Shut up!" He commanded, but still the wind roared, "SILENCE!"

The voices died to a gentle murmur, and one voice spoke. "Aang." It whispered.

Aang lifted his head. "Katara?" He called, and another light appeared a way down from where he was. He straightened and ran towards it. Katara floated a few inches above the ground, surrounded with a light similar to the light had emanated from Yue when she became the moon spirit. Her hair was loose down her back, and her eyes were pure white. But somehow, Aang still knew she was looking at him.

"Aang." Katara said again.

"Katara, what's going on? Where are we?" Aang asked.

"Why Aang? Why did you fail?" Her voice echoed in the darkness around them.

"I-I didn't fail, Katara." He protested weakly.

Katara's face flickered to Sokka's. "How could you, Aang?"

Sokka's face became Toph. "I thought we could trust you."

Toph to Zuko. "I thought we could depend on you."

Zuko's face twisted into an evil grin, and the scar faded, as he became Azula, who threw her head back and laughed manically. "Yes, yes, little avatar, and I killed them all. From the filthy peasants, to my traitorous brother. And now you are alone."

Black tendrils drifted out of the darkness behind her, slithering closer to Aang. He stared at them in horror and Azula grinned again, becoming Ozai.

"And now, Avatar…" The tendrils shot forward and grasped Aang before he could stop them. "Now, you are mine."